ASTROSAT CZTI

Data Quality Report

Orbit 20220412_A11_099T01_9000005068_level2

Creation date: 2022-04-24T01:54:34.922495
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_099T01_9000005068cztM0_level2_bc.evt modeM0/AS1A11_099T01_9000005068cztM0_level2_quad_clean.evt
Size (bytes)13,130,426,8801,982,851,200
Size12.2 GB 1.8 GB
Events in quadrant A45,007,30613,988,688
Events in quadrant B152,559,2418,560,672
Events in quadrant C59,232,07013,641,497
Events in quadrant D128,622,10911,501,159

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06850
B06860
C06860
D06860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03975700
B010562400
C04290420
D07031400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036700
B036700
C036700
D036700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17985534621.924884%
B17985110030755.772278%
C17985349042.726671%
D1798553091717.189959%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 256134 179855 136 136 0.05% 0.08%
B 256134 179853 820 820 0.32% 0.46%
C 256134 179859 1269 1269 0.50% 0.71%
D 256134 179859 10358 10358 4.04% 5.76%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 4022803 1964.64 9357 9229 2042.9
A 10 83 2963124 1445.93 9357 9229 2042.9
A 9 143 580164 279.47 9357 9229 2042.9
B 4 251 114284738 88251.67 6511 6392 1294.9
B 5 172 4604888 3551.2 6511 6392 1294.9
B 5 236 3806489 2934.63 6511 6392 1294.9
C 0 10 7183568 3476.13 9058 8999 2064.0
C 15 214 6939371 3357.82 9058 8999 2064.0
C 4 254 2725196 1316.02 9058 8999 2064.0
D 7 80 50708926 24725.82 8458 8185 2050.5
D 8 195 16015815 7806.63 8458 8185 2050.5
D 12 235 5690770 2771.29 8458 8185 2050.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter