ASTROSAT CZTI

Data Quality Report

Orbit 20180909_G08_081T01_9000002350_level2

Creation date: 2018-09-18T12:14:49.268205
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/AS1G08_081T01_9000002350cztM0_level2_bc.evt modeM0/AS1G08_081T01_9000002350cztM0_level2_quad_clean.evt
Size (bytes)2,009,629,440877,230,720
Size1.9 GB 836.6 MB
Events in quadrant A14,100,4085,616,348
Events in quadrant B14,803,9765,699,060
Events in quadrant C13,369,0905,467,560
Events in quadrant D14,206,7325,384,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01364860
B01379220
C01348380
D01356290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013060
B013060
C013060
D013060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A642388031.250039%
B642389831.530247%
C6423810521.637660%
D642385860.912233%

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 75449 64239 13 13 0.02% 0.02%
B 75449 64234 7 7 0.01% 0.01%
C 75449 64237 7 7 0.01% 0.01%
D 75449 64235 78 78 0.10% 0.12%

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 13 210 617847 840.28 3374 3316 731.3
A 15 239 458867 622.9 3374 3316 731.3
A 13 34 58950 76.07 3374 3316 731.3
B 4 173 362344 568.51 3409 3325 631.5
B 5 65 329875 517.09 3409 3325 631.5
B 0 189 261486 408.8 3409 3325 631.5
C 3 233 389807 502.99 3282 3269 768.5
C 9 236 242773 311.66 3282 3269 768.5
C 0 207 48293 58.59 3282 3269 768.5
D 13 104 461177 599.93 3345 3234 763.3
D 2 234 292010 378.31 3345 3234 763.3
D 2 152 146113 187.18 3345 3234 763.3

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