ASTROSAT CZTI

Data Quality Report

Orbit 55070

Creation date: 2025-12-02T17:40:02.151932
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_55070cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55070cztM0_level2_quad_clean.evt
Size (bytes)2,872,376,640593,375,040
Size2.7 GB 565.9 MB
Events in quadrant A23,858,8943,886,167
Events in quadrant B21,780,4484,243,502
Events in quadrant C20,610,4453,761,869
Events in quadrant D36,900,3903,252,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010045210
B0943078
C0920978
D01385928

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08420
B08420
C08420
D08420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4109213973.399689%
B4109411732.854431%
C410947231.759381%
D41094439010.682825%

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 49018 41101 1115 1115 2.27% 2.71%
B 49019 41103 526 526 1.07% 1.28%
C 49019 41103 558 558 1.14% 1.36%
D 49019 41102 3854 3854 7.86% 9.38%

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 2809327 2603.65 4427 4326 1077.3
A 15 32 2651591 2457.23 4427 4326 1077.3
A 0 250 456778 419.97 4427 4326 1077.3
B 5 185 2816239 2991.41 4397 4225 940.0
B 2 249 573724 605.83 4397 4225 940.0
B 4 81 390973 411.42 4397 4225 940.0
C 13 3 1734841 1462.56 4333 4294 1183.2
C 6 223 702463 590.05 4333 4294 1183.2
C 12 252 448225 375.19 4333 4294 1183.2
D 11 129 8616698 7402.99 4148 3978 1163.4
D 2 249 4008321 3441.9 4148 3978 1163.4
D 6 239 1995554 1711.84 4148 3978 1163.4

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