ASTROSAT CZTI

Data Quality Report

Orbit 55398

Creation date: 2025-12-24T17:23:49.290433
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_099T01_9000006536_55398cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55398cztM0_level2_quad_clean.evt
Size (bytes)425,249,28089,642,880
Size405.5 MB 85.5 MB
Events in quadrant A2,666,339607,566
Events in quadrant B2,702,009639,351
Events in quadrant C2,811,281563,172
Events in quadrant D7,073,911466,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127691
B0128131
C0133461
D0253461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6268641.021059%
B6269731.164460%
C6269781.244218%
D6269108917.371192%

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 7178 6269 0 0 0.00% 0.00%
B 7179 6270 2 2 0.03% 0.03%
C 7179 6270 26 26 0.36% 0.41%
D 7179 6270 1115 1115 15.53% 17.78%

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 4 3 27274 161.38 664 647 165.0
A 8 6 24562 144.94 664 647 165.0
A 0 8 17045 99.38 664 647 165.0
B 5 172 63152 446.7 650 627 140.0
B 10 247 29720 207.85 650 627 140.0
B 0 182 21616 149.95 650 627 140.0
C 12 249 165128 943.19 635 628 174.4
C 13 3 78647 447.34 635 628 174.4
C 12 2 33477 188.35 635 628 174.4
D 11 129 3724468 22271.4 593 565 167.2
D 8 160 763464 4562.64 593 565 167.2
D 11 176 81574 484.49 593 565 167.2

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