ASTROSAT CZTI

Data Quality Report

Orbit 54235

Creation date: 2025-10-07T11:11:05.845412
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/AS1C09_004T08_9000006514_54235cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54235cztM0_level2_quad_clean.evt
Size (bytes)878,981,76066,441,600
Size838.3 MB 63.4 MB
Events in quadrant A8,727,443392,857
Events in quadrant B3,593,425623,416
Events in quadrant C4,537,419512,060
Events in quadrant D15,188,84742,194

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302491
B0150401
C0181961
D0494472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318227536.008230%
B63181432.263374%
C63185999.480848%
D6317591893.683711%

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 7118 6319 1876 1876 26.36% 29.69%
B 7118 6319 56 56 0.79% 0.89%
C 7118 6319 514 514 7.22% 8.13%
D 7117 6315 4763 4763 66.92% 75.42%

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 3550217 26821.32 530 517 132.3
A 12 17 2128188 16076.55 530 517 132.3
A 12 194 265891 2005.15 530 517 132.3
B 7 0 261469 1876.29 648 626 139.0
B 5 172 146306 1047.9 648 626 139.0
B 4 171 135617 971.01 648 626 139.0
C 1 241 1305303 7867.83 602 598 165.8
C 15 215 455090 2740.74 602 598 165.8
C 12 252 158864 954.4 602 598 165.8
D 8 176 14152260 248335.09 196 187 57.0
D 3 12 140714 2465.91 196 187 57.0
D 8 160 43758 764.57 196 187 57.0

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