ASTROSAT CZTI

Data Quality Report

Orbit 20180802_C03_001T01_9000002270_level2

Creation date: 2025-11-23T20:27:45.078463
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/AS1C03_001T01_9000002270cztM0_level2.fits modeM0/AS1C03_001T01_9000002270cztM0_level2_quad_clean.evt
Size (bytes)772,329,600796,478,400
Size736.6 MB 759.6 MB
Events in quadrant A4,686,7105,046,367
Events in quadrant B4,455,1044,854,508
Events in quadrant C4,750,3884,995,809
Events in quadrant D3,713,8663,453,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017140
B017140
C017140
D017140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02066120
B02384340
C01796350
D03681210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8418146805.559449%
B8418161587.315190%
C841818150.968152%
D841811945923.115667%

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 98461 83748 0 0 0.00% 0.00%
B 98461 84084 0 0 0.00% 0.00%
C 98461 84173 0 0 0.00% 0.00%
D 98461 84036 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 4468 11.12 1221 1148 298.6
A 7 110 3760 8.75 1221 1148 298.6
A 9 19 3585 8.16 1221 1148 298.6
B 2 9 3635 11.01 1180 1130 227.6
B 2 8 3070 8.52 1180 1130 227.6
B 14 254 3062 8.49 1180 1130 227.6
C 12 241 3454 7.12 1255 1175 320.0
C 2 191 3197 6.32 1255 1175 320.0
C 3 126 3160 6.2 1255 1175 320.0
D 6 231 2777 6.35 1065 970 284.7
D 7 3 2602 5.73 1065 970 284.7
D 6 67 2573 5.63 1065 970 284.7

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