ASTROSAT CZTI

Data Quality Report

Orbit 16040

Creation date: 2024-06-27T17:17:09.483206
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_012T01_9000002370_16040cztM0_level2.evt modeM0/AS1G08_012T01_9000002370_16040cztM0_level2_quad_clean.evt
Size (bytes)498,850,560104,284,800
Size475.7 MB 99.5 MB
Events in quadrant A3,598,047658,518
Events in quadrant B3,734,418673,983
Events in quadrant C3,742,958658,854
Events in quadrant D3,525,717647,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156093
B0158822
C0157672
D0155782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7455470.630449%
B7455801.073105%
C74551051.408451%
D7455350.469484%

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 9656 7458 0 0 0.00% 0.00%
B 9656 7457 1 1 0.01% 0.01%
C 9656 7457 0 0 0.00% 0.00%
D 9656 7458 1 1 0.01% 0.01%

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 0 226 8214 38.9 933 914 187.7
A 12 194 6941 32.12 933 914 187.7
A 3 137 6702 30.84 933 914 187.7
B 12 111 21219 113.55 938 916 178.8
B 4 216 18635 99.1 938 916 178.8
B 11 111 18123 96.24 938 916 178.8
C 14 238 139180 649.62 911 916 212.8
C 3 233 37456 171.68 911 916 212.8
C 7 247 7946 33.03 911 916 212.8
D 2 152 32420 142.45 920 894 221.3
D 2 234 23057 100.14 920 894 221.3
D 14 226 9155 37.33 920 894 221.3

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