ASTROSAT CZTI

Data Quality Report

Orbit 50686

Creation date: 2025-02-10T10:40:23.763931
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/AS1T05_241T01_9000006446_50686cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50686cztM0_level2_quad_clean.evt
Size (bytes)660,905,280105,249,600
Size630.3 MB 100.4 MB
Events in quadrant A6,010,403664,484
Events in quadrant B4,674,942758,148
Events in quadrant C7,993,546610,052
Events in quadrant D5,204,575631,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230800
B0189071
C0290820
D0207810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75104666.205060%
B75091181.571448%
C7510105314.021305%
D75101942.583222%

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 7510 7510 306 306 4.07% 4.07%
B 7509 7509 64 64 0.85% 0.85%
C 7510 7510 910 910 12.12% 12.12%
D 7510 7510 216 216 2.88% 2.88%

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 12 80 1449823 7578.14 772 754 191.2
A 9 191 521085 2721.16 772 754 191.2
A 4 3 184544 961.16 772 754 191.2
B 0 229 469112 2806.86 783 756 166.9
B 4 170 431082 2578.95 783 756 166.9
B 10 247 136560 813.88 783 756 166.9
C 15 234 1364566 6715.46 733 727 203.1
C 15 174 1059411 5212.89 733 727 203.1
C 4 5 909831 4476.37 733 727 203.1
D 7 110 441153 2105.11 754 728 209.2
D 3 12 293373 1398.76 754 728 209.2
D 8 246 280838 1338.85 754 728 209.2

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