ASTROSAT CZTI

Data Quality Report

Orbit 20684

Creation date: 2024-06-27T18:18:19.800833
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/AS1A05_229T02_9000003060_20684cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20684cztM0_level2_quad_clean.evt
Size (bytes)502,467,840115,960,320
Size479.2 MB 110.6 MB
Events in quadrant A3,423,697791,248
Events in quadrant B3,711,678790,497
Events in quadrant C3,415,765756,907
Events in quadrant D4,239,979735,095

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142482
B0151962
C0142262
D0169393

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274951.514186%
B62741342.135799%
C62741322.103921%
D62732313.682449%

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 7609 6275 0 0 0.00% 0.00%
B 7609 6275 18 18 0.24% 0.29%
C 7609 6275 0 0 0.00% 0.00%
D 7608 6274 106 106 1.39% 1.69%

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 7835 39.14 891 875 177.8
A 3 137 6501 31.64 891 875 177.8
A 12 194 6387 31.0 891 875 177.8
B 7 220 205145 1269.29 870 852 160.9
B 0 229 32622 197.39 870 852 160.9
B 0 190 27114 163.17 870 852 160.9
C 14 238 134286 699.25 834 842 190.8
C 3 233 23699 119.77 834 842 190.8
C 13 61 5939 26.71 834 842 190.8
D 13 138 311038 1522.76 854 831 203.7
D 12 227 234282 1145.97 854 831 203.7
D 1 52 200073 978.05 854 831 203.7

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