ASTROSAT CZTI

Data Quality Report

Orbit 23766

Creation date: 2024-06-27T18:58:28.808769
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/AS1A07_091T10_9000003520_23766cztM0_level2.evt modeM0/AS1A07_091T10_9000003520_23766cztM0_level2_quad_clean.evt
Size (bytes)579,257,280103,484,160
Size552.4 MB 98.7 MB
Events in quadrant A3,536,798672,617
Events in quadrant B4,074,948684,485
Events in quadrant C3,790,111671,009
Events in quadrant D5,691,358642,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147782
B0164432
C0155123
D0218532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6647891.338950%
B66482363.549940%
C66471912.873477%
D66472283.430119%

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 9167 6647 0 0 0.00% 0.00%
B 9168 6648 98 98 1.07% 1.47%
C 9167 6647 9 9 0.10% 0.14%
D 9167 6647 101 101 1.10% 1.52%

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 13 254 10451 51.99 917 898 183.8
A 0 226 8003 38.66 917 898 183.8
A 3 137 7710 37.07 917 898 183.8
B 10 247 311043 1819.89 917 899 170.4
B 3 64 112433 654.47 917 899 170.4
B 0 229 32912 187.85 917 899 170.4
C 14 238 141848 673.11 899 908 209.4
C 7 247 112906 534.89 899 908 209.4
C 0 10 26013 119.9 899 908 209.4
D 1 52 1053532 4899.15 896 872 214.9
D 8 195 548117 2546.91 896 872 214.9
D 7 238 404940 1880.56 896 872 214.9

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