ASTROSAT CZTI

Data Quality Report

Orbit 57930

Creation date: 2026-06-13T00:08:48.033231
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_125T11_9000006582_57930cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57930cztM0_level2_quad_clean.evt
Size (bytes)351,898,56090,478,080
Size335.6 MB 86.3 MB
Events in quadrant A2,621,926601,353
Events in quadrant B3,387,153633,745
Events in quadrant C3,251,153556,593
Events in quadrant D3,299,835530,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122171
B0143001
C0139411
D0141961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5986170.283996%
B59871141.904126%
C5986851.419980%
D5986811.353157%

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 7141 5987 2 2 0.03% 0.03%
B 7142 5988 43 43 0.60% 0.72%
C 7141 5987 76 76 1.06% 1.27%
D 7141 5987 86 86 1.20% 1.44%

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 3 14 41727 257.83 647 631 159.4
A 3 31 22805 139.12 647 631 159.4
A 7 64 18146 109.89 647 631 159.4
B 3 238 474839 3534.42 635 613 134.2
B 0 63 84073 622.03 635 613 134.2
B 0 197 62073 458.06 635 613 134.2
C 15 224 704971 4153.54 615 608 169.6
C 14 67 48778 284.05 615 608 169.6
C 14 254 32514 188.14 615 608 169.6
D 8 240 339055 1941.53 615 587 174.3
D 8 160 174312 996.53 615 587 174.3
D 13 138 94746 540.12 615 587 174.3

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