ASTROSAT CZTI

Data Quality Report

Orbit 57133

Creation date: 2026-04-20T09:32:21.984995
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_083T10_9000006566_57133cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57133cztM0_level2_quad_clean.evt
Size (bytes)577,445,76089,743,680
Size550.7 MB 85.6 MB
Events in quadrant A3,079,817640,622
Events in quadrant B3,379,934680,415
Events in quadrant C5,054,133501,805
Events in quadrant D9,359,049443,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138672
B0145172
C0194012
D0322732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467490.757693%
B64671682.597804%
C6467118318.292872%
D6466171526.523353%

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 7577 6468 24 24 0.32% 0.37%
B 7577 6468 77 77 1.02% 1.19%
C 7577 6467 805 805 10.62% 12.45%
D 7576 6466 1797 1797 23.72% 27.79%

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 213104 1206.08 714 695 176.1
A 10 251 35074 195.21 714 695 176.1
A 5 113 24730 136.47 714 695 176.1
B 10 16 369473 2510.71 699 674 146.9
B 5 185 101618 687.21 699 674 146.9
B 0 213 48205 323.58 699 674 146.9
C 15 198 2377058 14939.2 578 570 159.1
C 12 252 337850 2120.23 578 570 159.1
C 14 254 56514 351.68 578 570 159.1
D 15 142 3910333 22402.25 614 586 174.5
D 12 33 2542310 14563.69 614 586 174.5
D 8 240 175620 1002.92 614 586 174.5

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