ASTROSAT CZTI

Data Quality Report

Orbit 57322

Creation date: 2026-05-03T03:06:05.506500
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_57322cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57322cztM0_level2_quad_clean.evt
Size (bytes)549,642,24085,464,000
Size524.2 MB 81.5 MB
Events in quadrant A4,868,570566,035
Events in quadrant B3,939,722604,503
Events in quadrant C4,428,315515,970
Events in quadrant D6,614,322455,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019362309
B016461290
C018290551
D024508390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01304
B01300
C01300
D01302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63883415.338134%
B63911892.957284%
C63642664.179761%
D6382104416.358508%

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 7843 6694 306 306 3.90% 4.57%
B 7858 6697 98 98 1.25% 1.46%
C 7843 6670 283 283 3.61% 4.24%
D 7840 6685 972 972 12.40% 14.54%

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 2135105 12465.21 691 674 171.2
A 3 245 22697 128.62 691 674 171.2
A 4 3 10004 54.49 691 674 171.2
B 5 185 770344 5281.41 684 659 145.7
B 10 16 297744 2038.53 684 659 145.7
B 7 252 49636 336.07 684 659 145.7
C 15 224 1337937 7471.15 653 647 179.0
C 14 254 330787 1844.42 653 647 179.0
C 6 223 83366 462.13 653 647 179.0
D 3 224 3371049 18942.97 623 594 177.9
D 2 249 376069 2110.28 623 594 177.9
D 7 96 122684 686.18 623 594 177.9

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