ASTROSAT CZTI

Data Quality Report

Orbit 10239

Creation date: 2024-06-27T15:56:50.841959
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/AS1A03_095T03_9000001474_10239cztM0_level2.evt modeM0/AS1A03_095T03_9000001474_10239cztM0_level2_quad_clean.evt
Size (bytes)605,574,720115,634,880
Size577.5 MB 110.3 MB
Events in quadrant A3,700,133748,305
Events in quadrant B4,136,904748,415
Events in quadrant C3,526,626746,844
Events in quadrant D6,426,739695,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167353
B0177052
C0164712
D0247502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8107520.641421%
B81071141.406192%
C8107230.283705%
D81072072.553349%

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 8767 8109 11 11 0.13% 0.14%
B 8767 8109 37 37 0.42% 0.46%
C 8767 8109 0 0 0.00% 0.00%
D 8767 8109 134 134 1.53% 1.65%

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 15 174 66588 339.21 937 917 193.6
A 8 15 17375 85.01 937 917 193.6
A 3 1 9736 45.55 937 917 193.6
B 11 51 128037 706.47 938 917 179.9
B 4 239 106337 585.87 938 917 179.9
B 0 219 74301 407.83 938 917 179.9
C 0 207 7806 33.02 901 903 209.1
C 13 61 6986 29.09 901 903 209.1
C 12 4 2986 9.96 901 903 209.1
D 1 52 2283163 10654.04 889 862 214.2
D 8 195 455801 2123.71 889 862 214.2
D 12 233 73481 338.99 889 862 214.2

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