ASTROSAT CZTI

Data Quality Report

Orbit 49641

Creation date: 2024-12-04T13:09:14.075494
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/AS1T05_233T01_9000006438_49641cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49641cztM0_level2_quad_clean.evt
Size (bytes)1,383,312,96043,476,480
Size1.3 GB 41.5 MB
Events in quadrant A17,754,01373,652
Events in quadrant B8,530,144631,500
Events in quadrant C7,317,2224,236
Events in quadrant D17,042,31790,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576070
B0303750
C0269450
D0555610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72497249100.000000%
B7249195326.941647%
C72507250100.000000%
D72497249100.000000%

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 7248 7248 6758 6758 93.24% 93.24%
B 7249 7249 1610 1610 22.21% 22.21%
C 7249 7249 4 4 0.06% 0.06%
D 7248 7248 6373 6373 87.93% 87.93%

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 0 99 8615722 160216.4 104 96 53.8
A 0 98 2037544 37888.44 104 96 53.8
A 10 83 1688397 31395.69 104 96 53.8
B 3 232 2015751 14237.57 666 646 141.5
B 5 173 1069241 7550.07 666 646 141.5
B 4 206 710640 5016.41 666 646 141.5
C 15 181 1300125 79196.22 19 17 16.4
C 15 180 1172537 71424.18 19 17 16.4
C 15 190 989369 60266.48 19 17 16.4
D 7 45 4762202 54059.41 136 122 88.1
D 15 40 3767725 42770.05 136 122 88.1
D 15 184 1996170 22659.25 136 122 88.1

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