ASTROSAT CZTI

Data Quality Report

Orbit 57615

Creation date: 2026-05-22T19:58:17.794817
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_070T08_9000006576_57615cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57615cztM0_level2_quad_clean.evt
Size (bytes)484,810,560107,300,160
Size462.4 MB 102.3 MB
Events in quadrant A3,294,442709,320
Events in quadrant B3,759,839755,771
Events in quadrant C5,983,103651,724
Events in quadrant D4,334,492618,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153140
B0163880
C0230370
D0180490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7387710.961148%
B73881902.571738%
C73885527.471576%
D73883384.574986%

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 7387 7387 3 3 0.04% 0.04%
B 7388 7388 17 17 0.23% 0.23%
C 7388 7388 446 446 6.04% 6.04%
D 7388 7388 227 227 3.07% 3.07%

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 62361 312.21 805 782 197.2
A 7 160 42383 210.92 805 782 197.2
A 10 251 23801 116.71 805 782 197.2
B 10 247 199606 1182.7 791 760 168.1
B 0 245 97111 573.08 791 760 168.1
B 5 185 91180 537.8 791 760 168.1
C 15 224 2358165 11364.53 763 753 207.4
C 9 38 352391 1695.16 763 753 207.4
C 12 2 91099 435.54 763 753 207.4
D 15 142 547422 2532.37 765 731 215.9
D 2 249 148009 682.22 765 731 215.9
D 15 125 97630 448.85 765 731 215.9

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