ASTROSAT CZTI

Data Quality Report

Orbit 41059

Creation date: 2024-06-27T22:23:56.298959
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_006T09_9000005592_41059cztM0_level2.fits modeM0/AS1A12_006T09_9000005592_41059cztM0_level2_quad_clean.evt
Size (bytes)379,350,72097,217,280
Size361.8 MB 92.7 MB
Events in quadrant A3,212,218657,708
Events in quadrant B2,813,536668,627
Events in quadrant C2,975,821632,764
Events in quadrant D4,575,258566,702

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01231
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132003
B0125682
C0125522
D0179032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5981140.234075%
B5981570.953018%
C5981310.518308%
D59813826.386892%

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 8997 5983 6 6 0.07% 0.10%
B 8997 5983 34 34 0.38% 0.57%
C 8997 5983 26 26 0.29% 0.43%
D 8997 5983 316 316 3.51% 5.28%

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 544780 3954.16 664 651 137.6
A 12 189 88940 641.59 664 651 137.6
A 13 254 10537 71.84 664 651 137.6
B 8 128 139296 1079.22 657 638 128.5
B 5 255 45310 347.7 657 638 128.5
B 0 229 23122 175.0 657 638 128.5
C 15 214 273426 1811.09 643 647 150.6
C 0 10 93140 614.1 643 647 150.6
C 14 254 53990 354.17 643 647 150.6
D 2 16 1043922 6687.39 632 615 156.0
D 12 79 765686 4903.95 632 615 156.0
D 13 249 108013 688.4 632 615 156.0

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