ASTROSAT CZTI

Data Quality Report

Orbit 55896

Creation date: 2026-01-27T04:13:49.280708
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_030T02_9000006544_55896cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55896cztM0_level2_quad_clean.evt
Size (bytes)369,072,00095,889,600
Size352.0 MB 91.4 MB
Events in quadrant A3,438,652624,333
Events in quadrant B2,928,675677,072
Events in quadrant C3,258,533597,957
Events in quadrant D3,539,033559,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148292
B0134552
C0144992
D0149622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6382580.908806%
B6382580.908806%
C63821141.786274%
D63821261.974303%

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 7572 6383 18 18 0.24% 0.28%
B 7572 6383 18 18 0.24% 0.28%
C 7572 6383 61 61 0.81% 0.96%
D 7572 6383 104 104 1.37% 1.63%

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 500563 2974.31 674 655 168.1
A 15 32 154177 913.41 674 655 168.1
A 12 115 58693 345.31 674 655 168.1
B 7 252 101004 701.29 672 647 143.1
B 0 199 63054 436.1 672 647 143.1
B 10 247 31387 214.81 672 647 143.1
C 12 252 469901 2573.84 662 654 182.3
C 13 3 132678 724.16 662 654 182.3
C 15 199 35512 191.2 662 654 182.3
D 2 31 312137 1699.43 656 628 183.3
D 11 129 157366 855.08 656 628 183.3
D 3 12 143311 778.4 656 628 183.3

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