ASTROSAT CZTI

Data Quality Report

Orbit 55345

Creation date: 2025-12-21T02:31:47.741904
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/AS1A14_009T01_9000006534_55345cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55345cztM0_level2_quad_clean.evt
Size (bytes)491,636,16094,844,160
Size468.9 MB 90.5 MB
Events in quadrant A7,818,339539,141
Events in quadrant B3,056,988687,933
Events in quadrant C3,424,240616,157
Events in quadrant D3,393,923575,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276102
B0137982
C0149582
D0148742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500129419.907692%
B6500891.369231%
C65001211.861538%
D65001632.507692%

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 7600 6501 1336 1336 17.58% 20.55%
B 7600 6501 0 0 0.00% 0.00%
C 7600 6501 71 71 0.93% 1.09%
D 7600 6501 71 71 0.93% 1.09%

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 12 115 4124371 24675.47 672 654 167.1
A 3 78 514453 3074.47 672 654 167.1
A 0 8 237453 1416.96 672 654 167.1
B 0 199 152388 1011.48 697 672 150.0
B 2 249 65566 432.64 697 672 150.0
B 9 254 32138 209.78 697 672 150.0
C 15 147 326763 1722.09 694 686 189.4
C 13 3 210802 1109.67 694 686 189.4
C 12 250 45740 237.94 694 686 189.4
D 2 62 178289 913.47 690 660 194.5
D 11 129 125344 641.2 690 660 194.5
D 2 31 100527 513.58 690 660 194.5

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