ASTROSAT CZTI

Data Quality Report

Orbit 14482

Creation date: 2024-06-27T16:55:47.486730
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_083T01_9000002134_14482cztM0_level2.evt modeM0/AS1G08_083T01_9000002134_14482cztM0_level2_quad_clean.evt
Size (bytes)636,036,480135,642,240
Size606.6 MB 129.4 MB
Events in quadrant A4,073,510891,529
Events in quadrant B4,495,152883,337
Events in quadrant C4,381,706878,035
Events in quadrant D5,705,464834,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181911
B0192921
C0182971
D0232791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8943560.626188%
B8943820.916918%
C8943410.458459%
D89434525.054232%

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 9454 8945 0 0 0.00% 0.00%
B 9454 8945 24 24 0.25% 0.27%
C 9454 8945 0 0 0.00% 0.00%
D 9454 8945 367 367 3.88% 4.10%

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 12 189 102069 484.42 1027 1002 208.6
A 0 226 9174 39.17 1027 1002 208.6
A 12 194 7986 33.47 1027 1002 208.6
B 0 189 162902 830.8 1021 993 194.9
B 15 222 105497 536.24 1021 993 194.9
B 0 182 85296 432.58 1021 993 194.9
C 3 233 447224 1922.73 1002 1006 232.1
C 0 207 23925 98.76 1002 1006 232.1
C 13 61 7187 26.63 1002 1006 232.1
D 2 120 971153 4130.58 979 952 234.9
D 12 110 580228 2466.24 979 952 234.9
D 10 199 273467 1160.22 979 952 234.9

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