ASTROSAT CZTI

Data Quality Report

Orbit 21144

Creation date: 2024-06-27T18:24:05.652157
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/AS1T03_136T01_9000003124_21144cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21144cztM0_level2_quad_clean.evt
Size (bytes)2,752,142,400379,497,600
Size2.6 GB 361.9 MB
Events in quadrant A13,605,6882,529,347
Events in quadrant B16,084,4862,533,628
Events in quadrant C13,575,6852,478,280
Events in quadrant D38,141,2661,968,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0593855
B0662435
C0592045
D01327017

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A288212800.971514%
B288226752.341961%
C288224071.412116%
D28821919231.893411%

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 32786 28823 0 0 0.00% 0.00%
B 32787 28826 283 283 0.86% 0.98%
C 32787 28826 0 0 0.00% 0.00%
D 32786 28823 8626 8626 26.31% 29.93%

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 15 192 74640 101.66 3490 3415 700.6
A 13 252 43225 56.82 3490 3415 700.6
A 13 254 42232 55.4 3490 3415 700.6
B 7 220 796157 1205.57 3466 3381 657.6
B 0 228 725640 1098.34 3466 3381 657.6
B 0 190 258817 388.44 3466 3381 657.6
C 14 238 518864 662.74 3333 3349 777.9
C 3 233 33068 38.21 3333 3349 777.9
C 13 61 23211 25.53 3333 3349 777.9
D 1 239 18701236 25680.18 2998 2914 728.1
D 9 65 1910211 2619.47 2998 2914 728.1
D 1 52 1867354 2560.61 2998 2914 728.1

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