ASTROSAT CZTI

Data Quality Report

Orbit 57714

Creation date: 2026-05-29T11:34:04.086043
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_125T09_9000006578_57714cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57714cztM0_level2_quad_clean.evt
Size (bytes)465,888,96087,408,000
Size444.3 MB 83.4 MB
Events in quadrant A2,595,146603,310
Events in quadrant B3,019,515644,298
Events in quadrant C7,174,334463,545
Events in quadrant D3,993,711519,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120881
B0131411
C0254421
D0159491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5952410.688844%
B59531141.915001%
C5953140823.651940%
D59533015.056274%

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 7142 5953 2 2 0.03% 0.03%
B 7143 5954 31 31 0.43% 0.52%
C 7143 5954 1112 1112 15.57% 18.68%
D 7143 5954 254 254 3.56% 4.27%

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 3 128 31508 188.56 659 642 163.7
A 3 137 7886 44.25 659 642 163.7
A 13 254 6614 36.48 659 642 163.7
B 4 80 165936 1201.54 651 629 137.6
B 5 185 63608 457.76 651 629 137.6
B 0 213 56048 402.81 651 629 137.6
C 15 224 3977366 25619.3 574 569 155.2
C 12 254 582058 3746.06 574 569 155.2
C 14 254 189819 1219.18 574 569 155.2
D 8 160 872616 4980.75 630 601 175.1
D 3 12 215859 1229.5 630 601 175.1
D 2 31 108429 615.89 630 601 175.1

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