ASTROSAT CZTI

Data Quality Report

Orbit 17686

Creation date: 2024-06-27T17:39:31.895094
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_052T01_9000002622_17686cztM0_level2.evt modeM0/AS1T03_052T01_9000002622_17686cztM0_level2_quad_clean.evt
Size (bytes)315,967,68065,914,560
Size301.3 MB 62.9 MB
Events in quadrant A2,289,099423,069
Events in quadrant B2,361,791438,556
Events in quadrant C2,358,478415,719
Events in quadrant D2,252,662401,896

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096561
B098342
C096561
D097551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4503220.488563%
B4502501.110618%
C4502671.488227%
D4502390.866282%

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 5758 4505 0 0 0.00% 0.00%
B 5757 4504 4 4 0.07% 0.09%
C 5757 4504 0 0 0.00% 0.00%
D 5757 4504 15 15 0.26% 0.33%

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 31 91285 787.89 570 558 115.2
A 14 237 8642 70.2 570 558 115.2
A 0 226 4985 38.45 570 558 115.2
B 0 230 56931 516.38 572 558 109.2
B 0 198 16285 144.06 572 558 109.2
B 0 189 15404 135.99 572 558 109.2
C 3 233 141053 1108.33 545 549 126.8
C 14 238 85309 668.61 545 549 126.8
C 5 218 6267 45.11 545 549 126.8
D 10 70 50256 375.95 547 532 132.3
D 13 232 37110 276.56 547 532 132.3
D 2 152 32581 242.32 547 532 132.3

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