ASTROSAT CZTI

Data Quality Report

Orbit 54866

Creation date: 2025-11-19T12:01:03.419325
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_54866cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54866cztM0_level2_quad_clean.evt
Size (bytes)1,358,187,840318,876,480
Size1.3 GB 304.1 MB
Events in quadrant A11,406,9112,086,337
Events in quadrant B10,380,2262,259,001
Events in quadrant C13,121,9221,966,243
Events in quadrant D13,678,4521,843,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497434
B0465644
C0540526
D0557084

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218006783.110092%
B218014041.853126%
C218008013.674312%
D218019864.522728%

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 26040 21800 331 331 1.27% 1.52%
B 26041 21801 58 58 0.22% 0.27%
C 26041 21802 519 519 1.99% 2.38%
D 26041 21802 724 724 2.78% 3.32%

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 1056917 1797.46 2397 2334 586.7
A 13 248 440136 746.2 2397 2334 586.7
A 0 250 266298 449.91 2397 2334 586.7
B 5 185 451755 897.02 2355 2266 501.1
B 10 247 238095 470.63 2355 2266 501.1
B 2 249 79418 153.97 2355 2266 501.1
C 12 252 1298339 2074.81 2300 2278 624.7
C 4 5 1132202 1808.85 2300 2278 624.7
C 14 254 813891 1299.28 2300 2278 624.7
D 12 6 1210206 1855.74 2310 2214 650.9
D 11 176 745952 1142.55 2310 2214 650.9
D 11 129 399578 610.44 2310 2214 650.9

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