ASTROSAT CZTI

Data Quality Report

Orbit 15872

Creation date: 2024-06-27T17:14:35.966093
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/AS1A04_143T01_9000002344_15872cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15872cztM0_level2_quad_clean.evt
Size (bytes)1,249,992,000197,282,880
Size1.2 GB 188.1 MB
Events in quadrant A9,648,8981,194,882
Events in quadrant B9,272,3691,219,901
Events in quadrant C8,837,6491,162,795
Events in quadrant D8,877,6201,153,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401684
B0387803
C0373613
D0382003

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180343742.073860%
B180342651.469447%
C180342711.502717%
D180341800.998115%

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 19905 18035 110 110 0.55% 0.61%
B 19905 18036 20 20 0.10% 0.11%
C 19905 18037 2 2 0.01% 0.01%
D 19905 18036 9 9 0.05% 0.05%

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 15 239 1339879 3078.69 2154 2103 434.5
A 0 226 19304 39.58 2154 2103 434.5
A 9 143 18572 37.9 2154 2103 434.5
B 3 64 308080 737.54 2165 2109 414.9
B 4 173 161857 385.07 2165 2109 414.9
B 5 65 73733 172.65 2165 2109 414.9
C 14 238 317254 644.62 2085 2098 488.9
C 3 233 133391 268.55 2085 2098 488.9
C 0 207 115183 231.3 2085 2098 488.9
D 1 52 511431 914.89 2107 2056 556.8
D 12 110 124466 219.86 2107 2056 556.8
D 2 234 79726 139.5 2107 2056 556.8

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