ASTROSAT CZTI

Data Quality Report

Orbit 20210607_A10_071T18_9000004448_level2

Creation date: 2025-12-26T15:54:46.716984
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_071T18_9000004448cztM0_level2.fits modeM0/AS1A10_071T18_9000004448cztM0_level2_quad_clean.evt
Size (bytes)708,122,880535,559,040
Size675.3 MB 510.7 MB
Events in quadrant A4,517,1943,095,298
Events in quadrant B4,237,1243,057,748
Events in quadrant C4,228,1202,838,057
Events in quadrant D3,645,2962,410,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014260
B014260
C014260
D014260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01552520
B02144390
C01762280
D02670890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7022613531.926637%
B7022616552.356677%
C7022627683.941560%
D7022656898.100988%

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 81641 70196 0 0 0.00% 0.00%
B 81641 70213 0 0 0.00% 0.00%
C 81641 70214 0 0 0.00% 0.00%
D 81641 70208 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 3672 8.98 1177 1107 285.7
A 7 110 3570 8.62 1177 1107 285.7
A 9 19 3218 7.39 1177 1107 285.7
B 2 9 3282 10.04 1120 1071 220.1
B 5 232 2908 8.34 1120 1071 220.1
B 3 80 2811 7.9 1120 1071 220.1
C 3 202 3211 7.57 1118 1045 286.1
C 3 203 3050 7.01 1118 1045 286.1
C 12 241 2916 6.54 1118 1045 286.1
D 15 46 2775 6.54 1041 947 279.6
D 6 67 2587 5.86 1041 947 279.6
D 7 3 2538 5.69 1041 947 279.6

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