ASTROSAT CZTI

Data Quality Report

Orbit 56783

Creation date: 2026-03-30T22:01:25.127658
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_083T03_9000006562_56783cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56783cztM0_level2_quad_clean.evt
Size (bytes)411,891,84090,103,680
Size392.8 MB 85.9 MB
Events in quadrant A4,496,392583,523
Events in quadrant B3,906,834614,020
Events in quadrant C3,609,699564,021
Events in quadrant D2,759,411540,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177001
B0158881
C0150131
D0127311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61022724.457555%
B61033886.357529%
C61031512.474193%
D6103671.097821%

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 7197 6103 152 152 2.11% 2.49%
B 7198 6103 168 168 2.33% 2.75%
C 7198 6104 106 106 1.47% 1.74%
D 7198 6103 15 15 0.21% 0.25%

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 1237221 7589.74 658 643 162.9
A 10 251 421795 2584.9 658 643 162.9
A 3 62 235509 1441.54 658 643 162.9
B 4 206 462302 3386.9 637 614 136.3
B 2 249 297729 2179.61 637 614 136.3
B 8 128 229541 1679.39 637 614 136.3
C 9 38 556887 3195.15 634 626 174.1
C 13 3 301351 1727.36 634 626 174.1
C 14 96 166691 953.87 634 626 174.1
D 2 249 87095 474.78 644 615 182.1
D 5 173 46390 251.31 644 615 182.1
D 2 236 35658 192.39 644 615 182.1

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