ASTROSAT CZTI

Data Quality Report

Orbit 41421

Creation date: 2024-06-27T22:28:49.239666
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/AS1A12_035T01_9000005666_41421cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41421cztM0_level2_quad_clean.evt
Size (bytes)432,838,08091,457,280
Size412.8 MB 87.2 MB
Events in quadrant A3,190,212625,586
Events in quadrant B2,710,562640,906
Events in quadrant C3,122,611604,418
Events in quadrant D6,548,143493,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128823
B0121182
C0129292
D0234122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5796270.465839%
B5796260.448585%
C57961512.605245%
D579695716.511387%

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 7200 5797 11 11 0.15% 0.19%
B 7200 5797 10 10 0.14% 0.17%
C 7200 5797 151 151 2.10% 2.60%
D 7200 5797 871 871 12.10% 15.03%

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 558087 4230.61 639 628 131.8
A 12 189 90137 679.29 639 628 131.8
A 13 248 38201 285.14 639 628 131.8
B 0 186 98283 793.77 632 615 123.0
B 0 190 74874 603.52 632 615 123.0
B 5 255 23761 188.11 632 615 123.0
C 0 10 445596 3062.78 616 619 145.3
C 15 214 257742 1769.78 616 619 145.3
C 15 111 12767 83.61 616 619 145.3
D 1 52 3259288 22143.89 590 572 147.2
D 13 249 350382 2377.06 590 572 147.2
D 12 79 236112 1600.56 590 572 147.2

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