ASTROSAT CZTI

Data Quality Report

Orbit 20220205_A05_082T12_9000004908_level2

Creation date: 2025-12-31T20:42:59.371221
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/AS1A05_082T12_9000004908cztM0_level2.fits modeM0/AS1A05_082T12_9000004908cztM0_level2_quad_clean.evt
Size (bytes)206,959,680165,029,760
Size197.4 MB 157.4 MB
Events in quadrant A1,321,902959,353
Events in quadrant B1,246,850950,038
Events in quadrant C1,223,696884,987
Events in quadrant D887,872619,582

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468630
B0557830
C0785510
D01280600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23002400.173898%
B230024872.117207%
C23002245010.651248%
D23002859237.353274%

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 29004 23001 0 0 0.00% 0.00%
B 29004 22999 0 0 0.00% 0.00%
C 29004 22996 0 0 0.00% 0.00%
D 29004 22959 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 9 19 1113 9.09 344 322 87.1
A 7 110 1058 8.45 344 322 87.1
A 0 29 1028 8.11 344 322 87.1
B 2 9 1076 11.38 329 313 67.1
B 3 80 931 9.22 329 313 67.1
B 2 8 883 8.5 329 313 67.1
C 1 81 985 8.14 323 302 83.9
C 1 80 955 7.79 323 302 83.9
C 3 187 864 6.7 323 302 83.9
D 7 3 690 6.67 254 232 68.6
D 10 113 642 5.97 254 232 68.6
D 6 231 630 5.8 254 232 68.6

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