ASTROSAT CZTI

Data Quality Report

Orbit 11411

Creation date: 2024-06-27T16:12:33.777131
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/AS1G08_066T01_9000001668_11411cztM0_level2.evt modeM0/AS1G08_066T01_9000001668_11411cztM0_level2_quad_clean.evt
Size (bytes)636,379,200113,520,960
Size606.9 MB 108.3 MB
Events in quadrant A4,134,670728,430
Events in quadrant B6,137,161700,486
Events in quadrant C3,905,966715,709
Events in quadrant D4,502,907687,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183283
B0241112
C0179522
D0196432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8733790.904615%
B87336527.465934%
C8733640.732852%
D87331802.061147%

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 9243 8736 10 10 0.11% 0.11%
B 9243 8736 327 327 3.54% 3.74%
C 9243 8736 6 6 0.06% 0.07%
D 9243 8736 112 112 1.21% 1.28%

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 8 5 140847 666.07 1024 1002 210.0
A 1 162 20559 93.15 1024 1002 210.0
A 1 178 11410 49.57 1024 1002 210.0
B 4 239 1881872 9708.8 1004 977 193.7
B 3 64 83167 424.25 1004 977 193.7
B 3 189 77915 397.14 1004 977 193.7
C 14 234 30246 127.0 994 997 230.3
C 13 61 7183 26.86 994 997 230.3
C 3 202 2487 6.47 994 997 230.3
D 10 253 437344 1819.46 981 950 239.8
D 2 120 72286 297.42 981 950 239.8
D 5 222 55652 228.07 981 950 239.8

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