ASTROSAT CZTI

Data Quality Report

Orbit 39702

Creation date: 2024-06-27T22:07:56.449122
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_011T22_9000005492_39702cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39702cztM0_level2_quad_clean.evt
Size (bytes)452,712,96092,191,680
Size431.7 MB 87.9 MB
Events in quadrant A6,058,828615,297
Events in quadrant B2,802,895638,228
Events in quadrant C4,243,836594,284
Events in quadrant D3,218,655551,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219793
B0121432
C0163172
D0131802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55982254.019293%
B5598400.714541%
C55981202.143623%
D5598791.411218%

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 7181 5599 158 158 2.20% 2.82%
B 7181 5599 15 15 0.21% 0.27%
C 7181 5599 96 96 1.34% 1.71%
D 7181 5599 65 65 0.91% 1.16%

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 15 222 2477707 19415.8 620 607 127.6
A 15 174 690615 5408.36 620 607 127.6
A 10 83 443975 3475.17 620 607 127.6
B 5 172 182339 1499.84 619 601 121.2
B 0 190 98099 804.63 619 601 121.2
B 5 255 62535 511.13 619 601 121.2
C 9 187 902750 6428.84 600 603 140.3
C 15 208 754823 5374.69 600 603 140.3
C 15 214 231525 1645.58 600 603 140.3
D 12 227 512112 3441.96 603 585 148.6
D 2 153 110330 738.45 603 585 148.6
D 2 249 84563 565.07 603 585 148.6

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