ASTROSAT CZTI

Data Quality Report

Orbit 54851

Creation date: 2025-11-17T22:09:40.373736
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_039T06_9000006526_54851cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54851cztM0_level2_quad_clean.evt
Size (bytes)388,788,48097,773,120
Size370.8 MB 93.2 MB
Events in quadrant A3,003,842642,529
Events in quadrant B3,291,537684,148
Events in quadrant C3,122,200613,221
Events in quadrant D4,465,433564,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134922
B0143992
C0140212
D0176732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534691.056015%
B65341482.265075%
C6534570.872360%
D65332583.949181%

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 7654 6535 7 7 0.09% 0.11%
B 7654 6535 61 61 0.80% 0.93%
C 7654 6535 16 16 0.21% 0.24%
D 7653 6534 233 233 3.04% 3.57%

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 69857 386.58 726 708 178.9
A 4 3 32496 177.71 726 708 178.9
A 8 246 21087 113.93 726 708 178.9
B 2 249 160824 1059.9 708 685 151.1
B 10 247 92196 605.67 708 685 151.1
B 5 236 91848 603.37 708 685 151.1
C 1 16 125109 645.43 705 697 192.8
C 12 252 68026 349.29 705 697 192.8
C 12 250 58196 298.29 705 697 192.8
D 14 52 262716 1312.89 699 668 199.6
D 3 12 255293 1275.7 699 668 199.6
D 11 129 204701 1022.23 699 668 199.6

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