ASTROSAT CZTI

Data Quality Report

Orbit 54163

Creation date: 2025-10-02T14:10:40.728508
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_012T01_9000006512_54163cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54163cztM0_level2_quad_clean.evt
Size (bytes)560,701,44099,239,040
Size534.7 MB 94.6 MB
Events in quadrant A3,916,126686,050
Events in quadrant B8,301,784534,861
Events in quadrant C3,320,574676,200
Events in quadrant D4,684,286630,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165842
B0293542
C0150382
D0188312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68502083.036496%
B6851219432.024522%
C6851470.686031%
D68502884.204380%

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 7700 6851 135 135 1.75% 1.97%
B 7701 6849 1482 1482 19.24% 21.64%
C 7701 6852 16 16 0.21% 0.23%
D 7700 6851 234 234 3.04% 3.42%

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 7 29 463024 2498.53 733 714 185.0
A 15 174 204634 1102.07 733 714 185.0
A 3 14 142933 768.61 733 714 185.0
B 6 255 4735550 35713.7 612 592 132.6
B 5 172 397956 2997.14 612 592 132.6
B 15 20 155454 1168.06 612 592 132.6
C 9 38 320373 1573.23 713 704 203.2
C 14 254 59443 289.08 713 704 203.2
C 0 224 25410 121.59 713 704 203.2
D 8 176 936714 4505.61 710 677 207.7
D 13 84 579740 2787.32 710 677 207.7
D 10 181 208106 998.46 710 677 207.7

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