ASTROSAT CZTI

Data Quality Report

Orbit 20210619_A10_058T11_9000004474_level2

Creation date: 2025-12-27T03:43:28.074315
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_058T11_9000004474cztM0_level2.fits modeM0/AS1A10_058T11_9000004474cztM0_level2_quad_clean.evt
Size (bytes)779,120,640603,158,400
Size743.0 MB 575.2 MB
Events in quadrant A4,872,5163,437,874
Events in quadrant B4,564,1963,365,479
Events in quadrant C4,720,1663,214,655
Events in quadrant D4,172,0502,981,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610730
B02378730
C01827640
D02090240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015620
B015620
C015620
D015620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7680310821.408799%
B7680324123.140502%
C7680226953.509023%
D7680222812.969975%

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 104817 76792 0 0 0.00% 0.00%
B 104817 76791 0 0 0.00% 0.00%
C 104817 76788 0 0 0.00% 0.00%
D 104817 76769 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 4677 11.17 1269 1189 312.3
A 7 110 3801 8.36 1269 1189 312.3
A 9 19 3684 7.99 1269 1189 312.3
B 2 9 3573 10.21 1206 1150 237.2
B 5 128 3023 7.9 1206 1150 237.2
B 3 80 2996 7.78 1206 1150 237.2
C 12 241 3271 6.62 1250 1176 316.3
C 3 126 3254 6.57 1250 1176 316.3
C 3 187 3231 6.5 1250 1176 316.3
D 10 189 2946 5.93 1192 1088 313.2
D 6 231 2860 5.66 1192 1088 313.2
D 7 3 2849 5.62 1192 1088 313.2

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