ASTROSAT CZTI

Data Quality Report

Orbit 22813

Creation date: 2024-06-27T18:46:07.084059
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/AS1A07_054T01_9000003370_22813cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22813cztM0_level2_quad_clean.evt
Size (bytes)2,278,563,840647,648,640
Size2.1 GB 617.6 MB
Events in quadrant A15,307,3904,530,966
Events in quadrant B15,648,4374,510,926
Events in quadrant C15,097,0914,236,399
Events in quadrant D20,826,8624,175,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650116
B0660886
C0646756
D0826336

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06460
B06460
C06460
D06460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314992300.730182%
B314993140.996857%
C315003881.231746%
D3150011343.600000%

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 38809 31505 0 0 0.00% 0.00%
B 38809 31505 8 8 0.02% 0.03%
C 38810 31506 3 3 0.01% 0.01%
D 38810 31506 768 768 1.98% 2.44%

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 13 252 81546 100.42 3950 3877 773.4
A 13 254 57705 69.6 3950 3877 773.4
A 0 226 34328 39.37 3950 3877 773.4
B 0 190 172769 235.55 3889 3801 717.3
B 0 229 95941 128.45 3889 3801 717.3
B 12 111 84678 112.74 3889 3801 717.3
C 14 238 602062 705.14 3712 3742 848.5
C 13 61 26076 26.32 3712 3742 848.5
C 10 22 23573 23.37 3712 3742 848.5
D 1 52 5432910 6040.25 3772 3662 898.8
D 2 152 268586 294.74 3772 3662 898.8
D 6 112 220553 241.3 3772 3662 898.8

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