ASTROSAT CZTI

Data Quality Report

Orbit 58637

Creation date: 2026-07-30T15:18:07.315577
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_004T06_9000006594_58637cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58637cztM0_level2_quad_clean.evt
Size (bytes)1,517,195,520229,642,560
Size1.4 GB 219.0 MB
Events in quadrant A9,816,0471,579,310
Events in quadrant B10,282,1401,658,071
Events in quadrant C23,640,2221,085,897
Events in quadrant D11,080,5101,432,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041493123
B042479136
C082668363
D045289161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03511
B03500
C03500
D03522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0122
C0111
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A173645543.190509%
B173649315.361668%
C17354559032.211594%
D173677014.036391%

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 18434 17380 160 160 0.87% 0.92%
B 18433 17378 373 373 2.02% 2.15%
C 18433 17370 4798 4798 26.03% 27.62%
D 18434 17381 423 423 2.29% 2.43%

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 12 114 1313753 2822.41 1902 1856 464.8
A 10 251 703463 1509.43 1902 1856 464.8
A 10 17 142899 303.44 1902 1856 464.8
B 8 128 966305 2446.81 1852 1776 394.2
B 5 185 655874 1659.31 1852 1776 394.2
B 8 234 541950 1370.31 1852 1776 394.2
C 15 164 11606414 26994.6 1574 1559 429.9
C 15 217 3044809 7079.05 1574 1559 429.9
C 4 5 1539202 3576.78 1574 1559 429.9
D 11 129 1714073 3313.62 1843 1764 516.7
D 8 240 856039 1653.17 1843 1764 516.7
D 7 222 454556 876.23 1843 1764 516.7

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