ASTROSAT CZTI

Data Quality Report

Orbit 20220427_A10_071T01_9000005096_level2

Creation date: 2022-05-04T10:01:35.735473
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/AS1A10_071T01_9000005096cztM0_level2_bc.evt modeM0/AS1A10_071T01_9000005096cztM0_level2_quad_clean.evt
Size (bytes)1,756,313,280484,692,480
Size1.6 GB 462.2 MB
Events in quadrant A12,548,9842,962,084
Events in quadrant B13,728,4282,941,364
Events in quadrant C11,923,1282,987,019
Events in quadrant D12,097,6892,876,582

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08640
B08640
C08640
D08640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01650
C01650
D01650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0993310
B01097920
C0932230
D0956320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A424299882.328596%
B4242926966.354145%
C424297021.654529%
D424294040.952179%

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 58774 42436 151 151 0.26% 0.36%
B 58774 42429 83 83 0.14% 0.20%
C 58774 42430 54 54 0.09% 0.13%
D 58774 42430 75 75 0.13% 0.18%

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 3229763 6686.57 2184 2149 482.7
A 10 83 774297 1599.64 2184 2149 482.7
A 13 6 82480 166.42 2184 2149 482.7
B 5 172 5075340 12101.08 2164 2117 419.2
B 0 189 120775 283.03 2164 2117 419.2
B 4 232 114724 268.6 2164 2117 419.2
C 15 214 1684902 3388.01 2170 2149 496.7
C 0 10 1558388 3133.29 2170 2149 496.7
C 14 67 72034 140.7 2170 2149 496.7
D 7 80 916398 1794.07 2176 2116 509.6
D 8 195 629323 1230.75 2176 2116 509.6
D 13 249 424826 829.47 2176 2116 509.6

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