ASTROSAT CZTI

Data Quality Report

Orbit 20210527_A10_071T05_9000004412_level2

Creation date: 2025-12-26T03:54:09.543449
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_071T05_9000004412cztM0_level2.fits modeM0/AS1A10_071T05_9000004412cztM0_level2_quad_clean.evt
Size (bytes)721,497,600558,192,960
Size688.1 MB 532.3 MB
Events in quadrant A4,592,1703,209,882
Events in quadrant B4,269,2483,148,424
Events in quadrant C4,298,7562,968,882
Events in quadrant D3,856,4262,741,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01532780
B02157860
C01579340
D02117930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014360
B014360
C014360
D014360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7048311291.601805%
B7048315762.236000%
C7048323883.388051%
D7048316902.397741%

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 81274 70485 0 0 0.00% 0.00%
B 81274 70484 0 0 0.00% 0.00%
C 81274 70480 0 0 0.00% 0.00%
D 81274 70476 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 3669 8.84 1197 1128 287.3
A 7 110 3662 8.82 1197 1128 287.3
A 9 19 3364 7.78 1197 1128 287.3
B 2 9 3441 10.65 1129 1079 221.8
B 2 8 2826 7.88 1129 1079 221.8
B 5 232 2825 7.87 1129 1079 221.8
C 12 241 2996 6.73 1139 1068 286.4
C 3 126 2941 6.54 1139 1068 286.4
C 9 209 2869 6.29 1139 1068 286.4
D 15 46 2821 6.26 1101 1010 289.1
D 6 231 2664 5.72 1101 1010 289.1
D 7 3 2663 5.72 1101 1010 289.1

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