ASTROSAT CZTI

Data Quality Report

Orbit 56763

Creation date: 2026-03-26T14:09:36.849431
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_083T05_9000006560_56763cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56763cztM0_level2_quad_clean.evt
Size (bytes)1,550,534,400358,879,680
Size1.4 GB 342.3 MB
Events in quadrant A14,552,9962,341,459
Events in quadrant B15,623,3182,436,200
Events in quadrant C12,568,2092,225,334
Events in quadrant D12,676,1312,108,475

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05160
B05160
C05160
D05160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0609594
B0643994
C0566204
D0568874

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A255046592.583908%
B2550416006.273526%
C255036472.536956%
D255035492.152688%

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 27074 25507 246 246 0.91% 0.96%
B 27074 25507 803 803 2.97% 3.15%
C 27073 25507 178 178 0.66% 0.70%
D 27073 25507 195 195 0.72% 0.76%

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 3 14 1646605 2440.99 2743 2678 673.5
A 10 251 817012 1209.16 2743 2678 673.5
A 3 62 703569 1040.72 2743 2678 673.5
B 8 128 1708254 2979.4 2667 2566 572.5
B 5 185 850818 1481.68 2667 2566 572.5
B 4 206 821722 1430.86 2667 2566 572.5
C 13 3 469861 640.63 2675 2652 729.3
C 14 254 289181 392.88 2675 2652 729.3
C 6 223 237415 321.9 2675 2652 729.3
D 2 120 904270 1210.24 2668 2546 745.1
D 2 249 447026 596.55 2668 2546 745.1
D 5 173 262194 348.48 2668 2546 745.1

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