ASTROSAT CZTI

Data Quality Report

Orbit 54863

Creation date: 2025-11-18T15:37:05.467647
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_54863cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54863cztM0_level2_quad_clean.evt
Size (bytes)345,729,60087,399,360
Size329.7 MB 83.4 MB
Events in quadrant A3,064,226563,337
Events in quadrant B2,679,935613,139
Events in quadrant C3,465,841541,169
Events in quadrant D3,121,615511,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135725
B0124721
C0144731
D0135041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59801662.775920%
B5983771.286980%
C5983911.520976%
D5983861.437406%

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 7007 5981 104 104 1.48% 1.74%
B 7008 5983 2 2 0.03% 0.03%
C 7008 5984 52 52 0.74% 0.87%
D 7008 5984 49 49 0.70% 0.82%

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 0 250 252742 1600.6 640 625 157.5
A 0 8 187172 1184.32 640 625 157.5
A 5 241 74185 467.01 640 625 157.5
B 5 185 67933 497.08 631 608 135.4
B 10 245 21281 152.63 631 608 135.4
B 10 247 19006 135.84 631 608 135.4
C 12 252 566809 3330.54 619 614 170.0
C 14 254 223139 1308.96 619 614 170.0
C 6 223 141491 828.68 619 614 170.0
D 2 252 117471 653.3 624 596 178.9
D 8 160 107776 599.11 624 596 178.9
D 15 94 57790 319.7 624 596 178.9

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