ASTROSAT CZTI

Data Quality Report

Orbit 34345

Creation date: 2022-02-03T18:58:58.465595
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_047T01_9000004904_34345cztM0_level2.evt modeM0/AS1A11_047T01_9000004904_34345cztM0_level2_quad_clean.evt
Size (bytes)129,358,08019,033,920
Size123.4 MB 18.2 MB
Events in quadrant A730,988119,285
Events in quadrant B915,021120,917
Events in quadrant C932,770119,325
Events in quadrant D1,239,621110,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030082
B035541
C035541
D046581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142620.140252%
B1426594.137447%
C1426795.539972%
D1426674.698457%

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 3099 1427 0 0 0.00% 0.00%
B 3099 1427 42 42 1.36% 2.94%
C 3099 1427 60 60 1.94% 4.20%
D 3099 1427 42 42 1.36% 2.94%

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 10 83 14166 358.76 184 181 39.0
A 13 6 3643 88.81 184 181 39.0
A 13 254 2046 47.84 184 181 39.0
B 5 172 189623 5217.19 180 175 36.3
B 5 255 7766 209.05 180 175 36.3
B 4 251 5820 155.46 180 175 36.3
C 0 10 186768 4510.99 170 171 41.4
C 15 214 61076 1472.38 170 171 41.4
C 15 159 9580 227.46 170 171 41.4
D 12 235 369911 8256.99 174 169 44.8
D 8 195 91483 2039.2 174 169 44.8
D 2 250 49823 1108.86 174 169 44.8

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