ASTROSAT CZTI

Data Quality Report

Orbit 54864

Creation date: 2025-11-18T17:44:57.282563
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_039T06_9000006526_54864cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54864cztM0_level2_quad_clean.evt
Size (bytes)375,531,84096,888,960
Size358.1 MB 92.4 MB
Events in quadrant A3,434,501632,897
Events in quadrant B2,980,991683,625
Events in quadrant C3,759,513595,969
Events in quadrant D3,221,168569,951

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148762
B0135115
C0156342
D0141222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64812023.116803%
B64791251.929310%
C64802463.796296%
D64801211.867284%

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 7546 6481 83 83 1.10% 1.28%
B 7546 6480 7 7 0.09% 0.11%
C 7545 6480 147 147 1.95% 2.27%
D 7545 6480 23 23 0.30% 0.35%

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 0 8 508965 2865.62 720 703 177.4
A 8 206 67257 375.23 720 703 177.4
A 5 241 22647 123.72 720 703 177.4
B 2 249 64353 421.69 706 680 151.0
B 10 247 36818 239.33 706 680 151.0
B 10 245 27967 180.71 706 680 151.0
C 4 5 362792 1914.28 690 685 189.2
C 14 254 244332 1288.04 690 685 189.2
C 12 252 215094 1133.47 690 685 189.2
D 11 129 75391 377.88 700 671 197.7
D 7 129 68466 342.86 700 671 197.7
D 5 173 55357 276.56 700 671 197.7

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