ASTROSAT CZTI

Data Quality Report

Orbit 57563

Creation date: 2026-05-19T13:10:58.333389
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_113T09_9000006574_57563cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57563cztM0_level2_quad_clean.evt
Size (bytes)505,967,04092,142,720
Size482.5 MB 87.9 MB
Events in quadrant A3,195,590621,469
Events in quadrant B3,153,858667,221
Events in quadrant C5,291,334567,186
Events in quadrant D6,581,314478,194

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141991
B0138911
C0202531
D0239801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529801.225302%
B6529590.903661%
C65294396.723847%
D6529106916.373105%

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 7434 6530 49 49 0.66% 0.75%
B 7434 6530 6 6 0.08% 0.09%
C 7434 6530 351 351 4.72% 5.38%
D 7434 6530 1083 1083 14.57% 16.58%

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 64 200741 1168.9 700 681 171.2
A 10 251 189167 1101.28 700 681 171.2
A 4 95 52735 304.14 700 681 171.2
B 10 247 124793 831.69 696 670 149.2
B 4 206 105139 699.99 696 670 149.2
B 4 142 43437 286.56 696 670 149.2
C 12 254 1069409 5889.27 670 664 181.5
C 15 224 828038 4559.21 670 664 181.5
C 12 2 442073 2432.36 670 664 181.5
D 15 142 2930048 16335.02 631 602 179.3
D 7 96 350975 1953.73 631 602 179.3
D 2 252 231316 1286.49 631 602 179.3

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