ASTROSAT CZTI

Data Quality Report

Orbit 40469

Creation date: 2024-06-27T22:16:29.198309
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/AS1A12_022T01_9000005540_40469cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40469cztM0_level2_quad_clean.evt
Size (bytes)890,570,880244,716,480
Size849.3 MB 233.4 MB
Events in quadrant A7,770,8431,662,973
Events in quadrant B7,563,0631,683,109
Events in quadrant C8,186,6741,635,302
Events in quadrant D8,237,0531,354,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331845
B0338964
C0348474
D0360554

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15562320.205629%
B155621941.246626%
C155621911.227349%
D15562186812.003599%

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 19800 15565 10 10 0.05% 0.06%
B 19800 15565 137 137 0.69% 0.88%
C 19800 15565 185 185 0.93% 1.19%
D 19800 15563 315 315 1.59% 2.02%

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 10 83 1241199 3698.57 1651 1621 335.2
A 12 189 50971 147.25 1651 1621 335.2
A 7 3 26490 74.2 1651 1621 335.2
B 0 230 548896 1754.37 1635 1587 312.0
B 5 255 294824 939.95 1635 1587 312.0
B 4 170 204694 651.05 1635 1587 312.0
C 14 254 846145 2264.95 1605 1613 372.9
C 15 214 659802 1765.2 1605 1613 372.9
C 10 20 319136 851.56 1605 1613 372.9
D 13 171 748499 2047.87 1499 1456 364.8
D 12 128 573668 1568.61 1499 1456 364.8
D 12 191 463649 1267.01 1499 1456 364.8

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