ASTROSAT CZTI

Data Quality Report

Orbit 26927

Creation date: 2024-06-27T19:34:35.970962
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/AS1A09_134T01_9000003896_26927cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26927cztM0_level2_quad_clean.evt
Size (bytes)1,139,829,12086,840,640
Size1.1 GB 82.8 MB
Events in quadrant A15,644,725328,355
Events in quadrant B4,462,790628,593
Events in quadrant C3,752,644620,139
Events in quadrant D10,159,152532,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0514790
B0178520
C0156760
D0354850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7445597380.228341%
B74453965.319006%
C74452683.599731%
D7445165622.243116%

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 7759 7444 5057 5057 65.18% 67.93%
B 7760 7445 152 152 1.96% 2.04%
C 7760 7446 8 8 0.10% 0.11%
D 7760 7445 1609 1609 20.73% 21.61%

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 14 235 13936864 159133.37 431 423 87.6
A 8 192 28323 318.58 431 423 87.6
A 5 168 12623 139.31 431 423 87.6
B 0 189 660954 3725.56 925 901 177.2
B 10 245 45449 251.44 925 901 177.2
B 0 219 44610 246.71 925 901 177.2
C 14 238 147753 698.11 904 911 210.3
C 15 208 73379 344.52 904 911 210.3
C 13 61 6204 25.16 904 911 210.3
D 7 80 6330413 30821.89 862 842 205.4
D 2 250 505442 2457.15 862 842 205.4
D 2 234 34347 163.15 862 842 205.4

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