ASTROSAT CZTI

Data Quality Report

Orbit 36198

Creation date: 2022-06-09T06:41:08.729490
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/AS1A11_097T17_9000005170_36198cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36198cztM0_level2_quad_clean.evt
Size (bytes)561,968,64083,050,560
Size535.9 MB 79.2 MB
Events in quadrant A2,947,953552,397
Events in quadrant B2,809,200560,851
Events in quadrant C3,148,027555,127
Events in quadrant D7,738,695458,118

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125363
B0119522
C0126772
D0267612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5547240.432666%
B5547330.594916%
C5547741.334054%
D5547138825.022535%

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 7190 5548 0 0 0.00% 0.00%
B 7190 5548 15 15 0.21% 0.27%
C 7190 5548 42 42 0.58% 0.76%
D 7190 5548 1463 1463 20.35% 26.37%

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 15 223 272900 2111.51 637 623 128.9
A 10 83 179563 1387.68 637 623 128.9
A 8 144 22859 172.44 637 623 128.9
B 5 172 225281 1846.47 634 617 121.7
B 4 171 43720 354.26 634 617 121.7
B 12 111 15344 121.04 634 617 121.7
C 15 214 251765 1708.84 627 633 147.0
C 0 10 172030 1166.28 627 633 147.0
C 15 208 136487 924.43 627 633 147.0
D 12 227 4391119 30712.64 578 560 143.0
D 12 235 430900 3010.29 578 560 143.0
D 12 6 275379 1922.4 578 560 143.0

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