ASTROSAT CZTI

Data Quality Report

Orbit 20200530_A09_027T02_9000003696_level2

Creation date: 2021-01-10T23:36:00.429062
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_027T02_9000003696cztM0_level2_bc.evt modeM0/AS1A09_027T02_9000003696cztM0_level2_quad_clean.evt
Size (bytes)4,137,837,1201,184,169,600
Size3.9 GB 1.1 GB
Events in quadrant A15,948,4488,101,129
Events in quadrant B27,332,4517,773,932
Events in quadrant C17,394,2847,728,526
Events in quadrant D59,593,3377,168,637

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01539900
B02054280
C01610870
D03019490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015120
B015120
C015120
D015120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A742945640.759146%
B7429470099.434140%
C7429412891.734999%
D74294872311.741190%

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 86359 74296 0 0 0.00% 0.00%
B 86359 74271 381 381 0.44% 0.51%
C 86359 74291 15 15 0.02% 0.02%
D 86359 74285 1292 1292 1.50% 1.74%

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 3 1 195202 216.5 4074 4011 883.1
A 13 254 115897 126.69 4074 4011 883.1
A 0 226 26822 25.83 4074 4011 883.1
B 3 64 11251725 15510.58 3897 3814 725.2
B 0 190 356492 486.33 3897 3814 725.2
B 15 33 243667 330.75 3897 3814 725.2
C 0 207 774568 839.69 3886 3884 917.8
C 3 233 770467 835.22 3886 3884 917.8
C 0 239 562287 608.4 3886 3884 917.8
D 8 195 17675242 19542.52 3848 3731 904.3
D 1 52 12514996 13835.92 3848 3731 904.3
D 9 35 8614918 9522.91 3848 3731 904.3

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