ASTROSAT CZTI

Data Quality Report

Orbit 53174

Creation date: 2025-07-28T16:32:13.576538
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/AS1C09_011T06_9000006490_53174cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53174cztM0_level2_quad_clean.evt
Size (bytes)2,556,783,360192,620,160
Size2.4 GB 183.7 MB
Events in quadrant A12,134,1101,615,750
Events in quadrant B14,845,1321,638,578
Events in quadrant C19,441,8331,302,469
Events in quadrant D46,826,37525,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0485523
B0566144
C0703063
D01516943

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181119585.289603%
B18110193810.701270%
C18110304416.808393%
D181101786898.663722%

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 19411 18114 658 658 3.39% 3.63%
B 19410 18113 1175 1175 6.05% 6.49%
C 19410 18112 2458 2458 12.66% 13.57%
D 19409 18109 17212 17212 88.68% 95.05%

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 12 3 1096857 2368.44 1862 1813 462.3
A 0 8 1050332 2267.81 1862 1813 462.3
A 15 174 540048 1164.13 1862 1813 462.3
B 10 191 4935790 13014.69 1800 1735 379.1
B 4 81 1104344 2908.38 1800 1735 379.1
B 2 249 408922 1074.05 1800 1735 379.1
C 15 224 4336801 9276.53 1700 1681 467.3
C 4 5 3252891 6957.12 1700 1681 467.3
C 15 158 916913 1958.46 1700 1681 467.3
D 15 125 41004641 256174.68 516 487 160.1
D 8 176 2096716 13096.25 516 487 160.1
D 10 172 534078 3333.63 516 487 160.1

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