ASTROSAT CZTI

Data Quality Report

Orbit 08686

Creation date: 2024-06-27T15:35:54.147245
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/AS1G07_024T01_9000001206_08686cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08686cztM0_level2_quad_clean.evt
Size (bytes)483,338,880116,665,920
Size460.9 MB 111.3 MB
Events in quadrant A2,824,895776,846
Events in quadrant B3,535,895795,646
Events in quadrant C4,489,096761,351
Events in quadrant D3,355,344755,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130143
B0148742
C0178652
D0146902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6372140.219711%
B63721592.495292%
C63725889.227872%
D63721271.993095%

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 7477 6373 5 5 0.07% 0.08%
B 7477 6373 121 121 1.62% 1.90%
C 7477 6373 438 438 5.86% 6.87%
D 7477 6373 88 88 1.18% 1.38%

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 13 251 24247 162.97 713 697 144.5
A 5 16 23592 158.43 713 697 144.5
A 15 174 21300 142.57 713 697 144.5
B 10 16 620127 4568.98 723 706 135.6
B 4 80 22770 162.75 723 706 135.6
B 0 230 21159 150.87 723 706 135.6
C 4 254 1679017 10771.03 683 686 155.8
C 1 16 124342 793.59 683 686 155.8
C 4 238 13731 83.72 683 686 155.8
D 2 152 221069 1302.87 696 676 169.2
D 1 52 213801 1259.91 696 676 169.2
D 12 233 95097 558.18 696 676 169.2

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