ASTROSAT CZTI

Data Quality Report

Orbit 56568

Creation date: 2026-03-13T09:33:48.804056
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_083T06_9000006558_56568cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56568cztM0_level2_quad_clean.evt
Size (bytes)529,914,240108,466,560
Size505.4 MB 103.4 MB
Events in quadrant A5,427,144680,726
Events in quadrant B3,880,769786,201
Events in quadrant C3,685,024685,231
Events in quadrant D6,023,890596,140

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216891
B0169951
C0167731
D0234281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77056508.436080%
B77061391.803789%
C77061031.336621%
D77067159.278484%

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 9255 7707 463 463 5.00% 6.01%
B 9256 7708 26 26 0.28% 0.34%
C 9256 7708 41 41 0.44% 0.53%
D 9256 7708 631 631 6.82% 8.19%

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 8 710510 3579.36 799 779 198.3
A 15 33 517634 2606.64 799 779 198.3
A 4 249 374535 1884.95 799 779 198.3
B 4 21 155759 876.14 826 795 176.9
B 10 247 120686 677.84 826 795 176.9
B 0 63 72802 407.11 826 795 176.9
C 9 38 191635 879.25 802 792 217.1
C 6 223 125947 576.61 802 792 217.1
C 13 3 85974 392.45 802 792 217.1
D 2 249 1596110 7378.54 763 725 216.2
D 8 129 434939 2008.21 763 725 216.2
D 13 153 210247 969.02 763 725 216.2

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