ASTROSAT CZTI

Data Quality Report

Orbit 20170927_G07_053T01_9000001566_level2

Creation date: 2025-11-17T09:30:56.342938
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/AS1G07_053T01_9000001566cztM0_level2.fits modeM0/AS1G07_053T01_9000001566cztM0_level2_quad_clean.evt
Size (bytes)230,981,760185,253,120
Size220.3 MB 176.7 MB
Events in quadrant A1,277,528914,011
Events in quadrant B1,360,1821,032,161
Events in quadrant C1,428,5661,042,855
Events in quadrant D1,190,716885,084

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05100
C05120
D05120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940460
B0766590
C0525420
D0743300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25221512120.304508%
B2522323289.229671%
C252271980.784873%
D2522516996.735382%

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 30597 24893 0 0 0.00% 0.00%
B 30597 25218 0 0 0.00% 0.00%
C 30597 25225 0 0 0.00% 0.00%
D 30597 25220 0 0 0.00% 0.00%

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 0 29 1268 11.45 332 313 83.4
A 7 110 1077 9.16 332 313 83.4
A 9 19 977 7.96 332 313 83.4
B 2 9 1146 10.97 359 343 73.2
B 14 254 882 7.37 359 343 73.2
B 12 226 870 7.2 359 343 73.2
C 12 241 1004 6.52 377 351 100.1
C 9 233 974 6.22 377 351 100.1
C 2 191 966 6.14 377 351 100.1
D 3 14 949 6.97 339 309 91.8
D 6 231 870 6.11 339 309 91.8
D 10 189 853 5.93 339 309 91.8

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