ASTROSAT CZTI

Data Quality Report

Orbit 57712

Creation date: 2026-05-29T08:09:08.946047
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_125T09_9000006578_57712cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57712cztM0_level2_quad_clean.evt
Size (bytes)485,199,36095,319,360
Size462.7 MB 90.9 MB
Events in quadrant A2,762,472653,894
Events in quadrant B3,261,897694,468
Events in quadrant C5,648,622576,280
Events in quadrant D5,795,221519,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128292
B0141032
C0211312
D0215102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334110.173666%
B63341272.005052%
C633464210.135775%
D633479912.614462%

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 7544 6335 0 0 0.00% 0.00%
B 7544 6335 47 47 0.62% 0.74%
C 7544 6335 498 498 6.60% 7.86%
D 7544 6335 774 774 10.26% 12.22%

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 3 128 21041 117.75 702 684 172.9
A 8 6 8835 47.15 702 684 172.9
A 11 31 8708 46.41 702 684 172.9
B 10 16 163474 1111.05 692 665 146.5
B 4 201 74330 502.71 692 665 146.5
B 5 185 68871 465.45 692 665 146.5
C 15 224 2620166 14623.15 659 654 179.1
C 12 254 240776 1340.46 659 654 179.1
C 14 254 71536 395.69 659 654 179.1
D 8 160 2784466 15105.26 647 616 184.3
D 2 153 190635 1031.05 647 616 184.3
D 3 12 151919 820.98 647 616 184.3

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