ASTROSAT CZTI

Data Quality Report

Orbit 23291

Creation date: 2024-06-27T18:52:26.745822
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/AS1C05_012T03_9000003442_23291cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23291cztM0_level2_quad_clean.evt
Size (bytes)498,072,960118,972,800
Size475.0 MB 113.5 MB
Events in quadrant A2,831,157837,815
Events in quadrant B2,959,678844,459
Events in quadrant C2,987,990816,559
Events in quadrant D5,908,427695,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120902
B0123891
C0123431
D0215471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5845671.146279%
B5846891.522408%
C5846981.676360%
D5846127721.843996%

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 7100 5846 0 0 0.00% 0.00%
B 7101 5846 13 13 0.18% 0.22%
C 7101 5847 1 1 0.01% 0.02%
D 7101 5847 1052 1052 14.81% 17.99%

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 13 254 8939 56.24 733 718 146.2
A 0 226 6477 39.4 733 718 146.2
A 3 137 5821 34.91 733 718 146.2
B 5 172 54486 395.67 728 710 135.9
B 0 190 33460 240.97 728 710 135.9
B 12 111 15434 108.34 728 710 135.9
C 14 238 116170 706.1 713 717 163.5
C 5 4 52909 319.2 713 717 163.5
C 7 247 27969 166.67 713 717 163.5
D 1 52 2501988 16354.94 636 619 152.9
D 7 238 871537 5694.4 636 619 152.9
D 1 239 55123 356.37 636 619 152.9

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