ASTROSAT CZTI

Data Quality Report

Orbit 15999

Creation date: 2024-06-27T17:16:36.043240
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_046T09_9000002362_15999cztM0_level2.evt modeM0/AS1G08_046T09_9000002362_15999cztM0_level2_quad_clean.evt
Size (bytes)511,312,32082,108,800
Size487.6 MB 78.3 MB
Events in quadrant A4,382,234490,379
Events in quadrant B3,685,517505,848
Events in quadrant C3,477,285488,521
Events in quadrant D3,440,100489,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181522
B0157861
C0151181
D0154641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73662413.271789%
B73661401.900624%
C73661351.832745%
D7366670.909585%

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 7587 7367 101 101 1.33% 1.37%
B 7587 7367 7 7 0.09% 0.10%
C 7587 7367 0 0 0.00% 0.00%
D 7587 7367 15 15 0.20% 0.20%

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 10 253 924232 5271.36 856 835 175.2
A 13 210 84745 479.01 856 835 175.2
A 15 157 39651 221.59 856 835 175.2
B 7 220 74994 446.16 869 845 166.2
B 4 216 49863 294.95 869 845 166.2
B 15 222 37068 217.96 869 845 166.2
C 14 238 130734 657.68 839 843 197.5
C 3 233 67955 339.81 839 843 197.5
C 13 61 6140 26.82 839 843 197.5
D 9 85 70620 338.33 849 823 206.3
D 4 239 55923 267.09 849 823 206.3
D 2 152 55217 263.67 849 823 206.3

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