ASTROSAT CZTI

Data Quality Report

Orbit 20210703_C06_006T03_9000004502_level2

Creation date: 2025-12-27T08:53:34.321581
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/AS1C06_006T03_9000004502cztM0_level2.fits modeM0/AS1C06_006T03_9000004502cztM0_level2_quad_clean.evt
Size (bytes)116,576,640100,068,480
Size111.2 MB 95.4 MB
Events in quadrant A720,992597,949
Events in quadrant B669,294581,491
Events in quadrant C689,748532,632
Events in quadrant D583,266450,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254960
B0391660
C0276330
D0505730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12523960.766589%
B125233082.459475%
C125237055.629641%
D12523136610.907929%

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 13404 12524 0 0 0.00% 0.00%
B 13404 12524 0 0 0.00% 0.00%
C 13404 12503 0 0 0.00% 0.00%
D 13404 12518 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 29 720 11.29 187 175 48.3
A 7 110 566 8.1 187 175 48.3
A 0 30 537 7.5 187 175 48.3
B 2 9 526 9.6 177 168 37.3
B 5 232 484 8.47 177 168 37.3
B 14 254 458 7.78 177 168 37.3
C 12 241 479 6.52 182 170 47.4
C 2 191 475 6.43 182 170 47.4
C 3 126 472 6.37 182 170 47.4
D 15 46 470 6.95 166 151 45.9
D 3 14 449 6.5 166 151 45.9
D 4 160 416 5.78 166 151 45.9

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