ASTROSAT CZTI

Data Quality Report

Orbit 55086

Creation date: 2025-12-03T18:28:03.844445
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_025T01_9000006530_55086cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55086cztM0_level2_quad_clean.evt
Size (bytes)402,327,36098,642,880
Size383.7 MB 94.1 MB
Events in quadrant A3,177,368639,923
Events in quadrant B3,256,215691,635
Events in quadrant C3,493,420614,478
Events in quadrant D4,428,550561,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014773199
B014927197
C015629265
D018431284

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01382
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68982643.827196%
B68952794.046410%
C68952143.103698%
D68794055.887484%

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 7817 6991 17 17 0.22% 0.24%
B 7818 6993 9 9 0.12% 0.13%
C 7817 6988 42 42 0.54% 0.60%
D 7817 6981 198 198 2.53% 2.84%

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 0 8 72290 372.28 778 758 192.1
A 4 3 26601 134.5 778 758 192.1
A 13 254 21386 107.36 778 758 192.1
B 5 185 166825 1000.54 764 732 166.0
B 0 182 50697 300.99 764 732 166.0
B 12 111 20824 121.03 764 732 166.0
C 13 3 165676 797.7 758 750 206.8
C 6 223 130460 627.37 758 750 206.8
C 12 252 42343 201.17 758 750 206.8
D 9 1 454898 2157.64 749 716 210.5
D 11 129 344132 1631.44 749 716 210.5
D 6 239 218325 1033.78 749 716 210.5

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