ASTROSAT CZTI

Data Quality Report

Orbit 37304

Creation date: 2024-06-27T21:38:11.640620
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/AS1A10_094T23_9000005304_37304cztM0_level2.evt modeM0/AS1A10_094T23_9000005304_37304cztM0_level2_quad_clean.evt
Size (bytes)393,416,640101,373,120
Size375.2 MB 96.7 MB
Events in quadrant A2,596,857679,200
Events in quadrant B2,639,002691,230
Events in quadrant C2,667,804703,711
Events in quadrant D3,677,124651,543

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105803
B0108512
C0106722
D0141122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491190.183262%
B4911661.343922%
C4911430.875585%
D49112675.436775%

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 7034 4912 5 5 0.07% 0.10%
B 7034 4912 34 34 0.48% 0.69%
C 7034 4912 33 33 0.47% 0.67%
D 7034 4912 256 256 3.64% 5.21%

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 10 83 267540 2294.07 585 574 116.4
A 13 248 33406 282.13 585 574 116.4
A 9 143 12198 99.89 585 574 116.4
B 12 18 200423 1869.78 577 562 106.9
B 0 213 77031 715.4 577 562 106.9
B 5 200 24169 220.85 577 562 106.9
C 15 214 210274 1583.84 579 583 132.4
C 0 10 165702 1247.18 579 583 132.4
C 1 23 20412 149.77 579 583 132.4
D 2 249 532674 3868.33 573 558 137.6
D 12 227 452200 3283.31 573 558 137.6
D 2 153 145888 1056.51 573 558 137.6

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