ASTROSAT CZTI

Data Quality Report

Orbit 33615

Creation date: 2024-06-27T20:50:49.679313
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/AS1T04_076T01_9000004810_33615cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33615cztM0_level2_quad_clean.evt
Size (bytes)546,831,36074,010,240
Size521.5 MB 70.6 MB
Events in quadrant A2,632,315472,196
Events in quadrant B4,236,566464,366
Events in quadrant C3,117,793469,597
Events in quadrant D6,185,638433,968

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116652
B0163661
C0128041
D0223151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5735120.209241%
B57354868.474281%
C5735701.220575%
D573587115.187446%

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 7349 5736 4 4 0.05% 0.07%
B 7349 5736 392 392 5.33% 6.83%
C 7349 5736 60 60 0.82% 1.05%
D 7349 5736 882 882 12.00% 15.38%

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 15 237 30433 221.47 667 654 134.5
A 13 6 15975 113.94 667 654 134.5
A 13 254 8022 54.8 667 654 134.5
B 5 172 1329527 10711.34 647 632 124.1
B 5 255 98830 791.51 647 632 124.1
B 15 85 50634 403.03 647 632 124.1
C 15 214 246410 1642.28 648 654 149.6
C 0 10 244886 1632.1 648 654 149.6
C 3 233 65886 435.92 648 654 149.6
D 1 20 1429214 8746.82 601 591 163.3
D 1 52 935653 5724.97 601 591 163.3
D 13 249 462542 2828.32 601 591 163.3

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