ASTROSAT CZTI

Data Quality Report

Orbit 57324

Creation date: 2026-05-03T06:16:10.442770
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_049T03_9000006570_57324cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57324cztM0_level2_quad_clean.evt
Size (bytes)546,667,20086,832,000
Size521.3 MB 82.8 MB
Events in quadrant A3,445,460584,815
Events in quadrant B3,281,733624,807
Events in quadrant C6,279,046489,627
Events in quadrant D6,693,530448,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154321
B0148541
C0235801
D0247871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6904871.260139%
B69031502.172968%
C690387612.690135%
D690390213.066783%

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 7553 7175 6 6 0.08% 0.08%
B 7552 7174 15 15 0.20% 0.21%
C 7552 7174 692 692 9.16% 9.65%
D 7552 7143 747 747 9.89% 10.46%

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 0 12 481993 2609.21 746 726 184.4
A 3 245 30617 162.06 746 726 184.4
A 8 4 11957 60.89 746 726 184.4
B 7 252 115239 729.84 734 708 156.9
B 10 16 74416 469.69 734 708 156.9
B 5 185 60697 382.27 734 708 156.9
C 15 224 2962738 16008.33 682 675 185.0
C 14 254 472057 2547.56 682 675 185.0
C 12 252 59041 315.44 682 675 185.0
D 3 224 2856524 14517.44 690 655 196.7
D 2 31 343074 1740.64 690 655 196.7
D 7 96 210429 1066.36 690 655 196.7

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