ASTROSAT CZTI

Data Quality Report

Orbit 20210710_A10_058T08_9000004528_level2

Creation date: 2025-12-27T10:02:31.387475
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_058T08_9000004528cztM0_level2.fits modeM0/AS1A10_058T08_9000004528cztM0_level2_quad_clean.evt
Size (bytes)227,177,280222,350,400
Size216.7 MB 212.0 MB
Events in quadrant A1,404,8121,341,133
Events in quadrant B1,305,9401,313,338
Events in quadrant C1,331,2121,254,689
Events in quadrant D1,187,5721,173,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492690
B0731190
C0527410
D0599340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04880
B04880
C04880
D04880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239891270.529409%
B239894591.913377%
C239895912.463629%
D239894001.667431%

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 26014 23990 0 0 0.00% 0.00%
B 26014 23989 0 0 0.00% 0.00%
C 26014 23984 0 0 0.00% 0.00%
D 26014 23989 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 1354 10.83 366 343 93.4
A 7 110 1109 8.21 366 343 93.4
A 0 30 1060 7.68 366 343 93.4
B 2 9 1092 10.83 345 328 70.5
B 2 8 926 8.48 345 328 70.5
B 5 128 912 8.28 345 328 70.5
C 12 241 969 7.12 352 330 89.8
C 2 191 912 6.48 352 330 89.8
C 3 126 895 6.29 352 330 89.8
D 6 231 852 5.93 339 309 91.6
D 7 3 844 5.84 339 309 91.6
D 6 67 812 5.49 339 309 91.6

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