ASTROSAT CZTI

Data Quality Report

Orbit 54822

Creation date: 2025-11-15T21:45:42.314066
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_54822cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54822cztM0_level2_quad_clean.evt
Size (bytes)499,008,96098,893,440
Size475.9 MB 94.3 MB
Events in quadrant A3,095,285668,907
Events in quadrant B3,604,465715,658
Events in quadrant C4,251,448627,917
Events in quadrant D6,989,651505,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142272
B0155322
C0173682
D0255912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68311091.595667%
B68311442.108037%
C68312243.279168%
D6830119417.481698%

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 7941 6833 4 4 0.05% 0.06%
B 7941 6833 43 43 0.54% 0.63%
C 7941 6833 112 112 1.41% 1.64%
D 7940 6832 1056 1056 13.30% 15.46%

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 8 246 32332 167.46 761 743 188.6
A 6 226 18431 93.77 761 743 188.6
A 13 254 14809 74.57 761 743 188.6
B 5 185 266971 1655.32 743 718 160.8
B 2 249 228016 1413.13 743 718 160.8
B 10 247 115997 716.7 743 718 160.8
C 12 252 434033 2167.1 733 725 199.9
C 9 38 275423 1373.84 733 725 199.9
C 13 3 264113 1317.28 733 725 199.9
D 1 31 2595436 13427.05 683 654 193.3
D 11 129 802024 4146.8 683 654 193.3
D 10 181 340016 1756.07 683 654 193.3

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