ASTROSAT CZTI

Data Quality Report

Orbit 20220906_A10_113T02_9000005332_level2

Creation date: 2026-01-05T05:39:05.717232
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_113T02_9000005332cztM0_level2.fits modeM0/AS1A10_113T02_9000005332cztM0_level2_quad_clean.evt
Size (bytes)212,068,800235,382,400
Size202.2 MB 224.5 MB
Events in quadrant A1,283,9261,501,828
Events in quadrant B1,234,2481,478,753
Events in quadrant C1,278,0501,437,687
Events in quadrant D1,029,7221,114,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0613760
B0516460
C0486050
D0773500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231822170.936071%
B231823291.419205%
C23182970.418428%
D23182300912.979898%

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 32148 23181 0 0 0.00% 0.00%
B 32148 23176 0 0 0.00% 0.00%
C 32148 23180 0 0 0.00% 0.00%
D 32147 23051 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 7 110 1098 9.41 335 315 83.2
A 9 19 1074 9.12 335 315 83.2
A 0 29 998 8.21 335 315 83.2
B 2 9 1036 10.91 328 313 66.3
B 3 80 1015 10.59 328 313 66.3
B 5 128 875 8.48 328 313 66.3
C 1 81 1047 8.38 338 318 87.0
C 1 80 1025 8.12 338 318 87.0
C 3 234 910 6.8 338 318 87.0
D 10 189 820 6.92 294 269 79.6
D 10 113 763 6.2 294 269 79.6
D 3 14 757 6.13 294 269 79.6

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