ASTROSAT CZTI

Data Quality Report

Orbit 12615

Creation date: 2024-06-27T16:30:00.925900
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_071T01_9000001874_12615cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12615cztM0_level2_quad_clean.evt
Size (bytes)1,350,213,120206,245,440
Size1.3 GB 196.7 MB
Events in quadrant A8,336,0331,263,170
Events in quadrant B10,225,7321,262,093
Events in quadrant C8,388,5691,272,143
Events in quadrant D12,718,5421,201,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369404
B0419673
C0375653
D0499743

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180932401.326480%
B180936953.841265%
C180931911.055657%
D180936893.808103%

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 19759 18094 4 4 0.02% 0.02%
B 19759 18094 419 419 2.12% 2.32%
C 19759 18095 30 30 0.15% 0.17%
D 19759 18095 482 482 2.44% 2.66%

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 12 189 103314 236.42 2112 2062 428.3
A 3 1 67934 153.81 2112 2062 428.3
A 9 143 33776 74.05 2112 2062 428.3
B 4 239 1605345 3986.38 2088 2032 402.2
B 11 51 132075 323.33 2088 2032 402.2
B 0 214 76484 185.11 2088 2032 402.2
C 15 208 324271 678.75 2054 2058 474.7
C 14 234 56685 115.07 2054 2058 474.7
C 13 61 14769 26.78 2054 2058 474.7
D 10 157 2794851 5743.14 2021 1951 486.3
D 1 52 1984624 4077.04 2021 1951 486.3
D 13 249 115131 232.74 2021 1951 486.3

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