ASTROSAT CZTI

Data Quality Report

Orbit 54369

Creation date: 2025-10-16T10:09:46.349085
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_126T15_9000006516_54369cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54369cztM0_level2_quad_clean.evt
Size (bytes)675,216,00080,392,320
Size643.9 MB 76.7 MB
Events in quadrant A3,826,063580,852
Events in quadrant B3,442,730631,671
Events in quadrant C7,353,878435,607
Events in quadrant D9,885,873349,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160191
B0149671
C0263331
D0337311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62603395.415335%
B62602073.306709%
C6261164426.257786%
D6261241438.556141%

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 7360 6261 266 266 3.61% 4.25%
B 7360 6261 114 114 1.55% 1.82%
C 7361 6262 1580 1580 21.46% 25.23%
D 7361 6262 2303 2303 31.29% 36.78%

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 12 17 847949 5326.03 639 622 159.1
A 15 174 287326 1802.13 639 622 159.1
A 12 194 105160 657.09 639 622 159.1
B 10 14 648424 4697.06 641 619 137.9
B 5 185 50427 361.14 641 619 137.9
B 2 249 45375 324.51 641 619 137.9
C 1 241 3844861 25487.03 542 537 150.8
C 1 29 674695 4469.52 542 537 150.8
C 12 2 220716 1459.74 542 537 150.8
D 8 176 7582786 51297.77 515 490 147.8
D 2 252 67347 452.32 515 490 147.8
D 12 3 66450 446.25 515 490 147.8

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