ASTROSAT CZTI

Data Quality Report

Orbit 53976

Creation date: 2025-09-19T22:46:02.677558
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_041T01_9000006510_53976cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53976cztM0_level2_quad_clean.evt
Size (bytes)977,376,96064,143,360
Size932.1 MB 61.2 MB
Events in quadrant A3,186,108607,136
Events in quadrant B4,561,844642,768
Events in quadrant C14,444,352130,029
Events in quadrant D13,502,249124,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140671
B0179851
C0471291
D0444521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62671282.042445%
B62673205.106111%
C6267500079.782990%
D6267496879.272379%

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 7302 6268 74 74 1.01% 1.18%
B 7302 6268 237 237 3.25% 3.78%
C 7302 6267 4870 4870 66.69% 77.71%
D 7302 6267 4193 4193 57.42% 66.91%

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 15 174 291296 1770.89 662 645 164.1
A 7 14 94356 570.97 662 645 164.1
A 4 254 41209 247.15 662 645 164.1
B 0 155 923255 6566.79 654 630 140.5
B 5 250 382881 2720.67 654 630 140.5
B 0 213 359320 2552.98 654 630 140.5
C 1 241 12594686 128064.2 353 350 98.3
C 15 209 250764 2546.31 353 350 98.3
C 12 252 70854 716.91 353 350 98.3
D 8 176 9881515 122304.18 281 268 80.8
D 10 172 1021689 12642.54 281 268 80.8
D 12 2 980332 12130.65 281 268 80.8

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