ASTROSAT CZTI

Data Quality Report

Orbit 53575

Creation date: 2025-08-25T17:01:15.384536
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_004T05_9000006502_53575cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53575cztM0_level2_quad_clean.evt
Size (bytes)1,058,993,28065,514,240
Size1009.9 MB 62.5 MB
Events in quadrant A7,679,817476,591
Events in quadrant B4,101,819679,391
Events in quadrant C13,211,576238,999
Events in quadrant D13,692,904124,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274681
B0167721
C0437901
D0452941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6651189028.416779%
B66521782.675887%
C6652425864.010824%
D6652547482.291040%

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 7236 6652 1395 1395 19.28% 20.97%
B 7237 6653 107 107 1.48% 1.61%
C 7237 6653 3686 3686 50.93% 55.40%
D 7236 6652 3619 3619 50.01% 54.40%

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 63 3633065 24498.28 599 585 148.3
A 3 45 678121 4569.46 599 585 148.3
A 15 174 397908 2679.64 599 585 148.3
B 2 249 468277 3061.22 712 688 152.7
B 10 28 243736 1591.19 712 688 152.7
B 10 247 81643 530.0 712 688 152.7
C 1 241 5459774 42145.28 464 460 129.5
C 15 224 3892570 30046.65 464 460 129.5
C 4 5 1081195 8343.15 464 460 129.5
D 8 176 8073453 88916.88 315 300 90.8
D 2 172 3829407 42173.39 315 300 90.8
D 7 70 194076 2134.23 315 300 90.8

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