ASTROSAT CZTI

Data Quality Report

Orbit 57625

Creation date: 2026-05-23T12:03:38.274009
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_070T08_9000006576_57625cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57625cztM0_level2_quad_clean.evt
Size (bytes)534,479,04093,116,160
Size509.7 MB 88.8 MB
Events in quadrant A3,142,422651,102
Events in quadrant B2,979,693704,509
Events in quadrant C4,318,320611,041
Events in quadrant D8,853,971412,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137641
B0131921
C0172201
D0307011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310600.950872%
B6310440.697306%
C63102764.374010%
D6311209333.164316%

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 7510 6311 30 30 0.40% 0.48%
B 7510 6311 4 4 0.05% 0.06%
C 7510 6311 226 226 3.01% 3.58%
D 7511 6312 2074 2074 27.61% 32.86%

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 4 249 359246 2062.59 703 687 173.8
A 3 14 45533 257.97 703 687 173.8
A 7 160 14344 78.56 703 687 173.8
B 0 213 49643 335.44 698 673 146.0
B 9 251 42073 283.58 698 673 146.0
B 7 252 23732 157.95 698 673 146.0
C 15 224 1341687 7276.66 681 675 184.3
C 12 2 218914 1184.22 681 675 184.3
C 14 254 35077 186.67 681 675 184.3
D 2 62 3262200 19115.58 602 573 170.6
D 15 142 2322624 13608.96 602 573 170.6
D 8 160 412399 2413.61 602 573 170.6

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