ASTROSAT CZTI

Data Quality Report

Orbit 31324

Creation date: 2024-06-27T20:26:43.515433
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/AS1T04_025T01_9000004538_31324cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31324cztM0_level2_quad_clean.evt
Size (bytes)161,026,56041,883,840
Size153.6 MB 39.9 MB
Events in quadrant A969,697298,525
Events in quadrant B1,484,543290,347
Events in quadrant C1,037,559279,153
Events in quadrant D1,268,868277,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039461
B054761
C041981
D050196

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1674110.657109%
B1674623.703704%
C1674603.584229%
D1673804.781829%

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 1674 1674 0 0 0.00% 0.00%
B 1674 1674 3 3 0.18% 0.18%
C 1674 1674 12 12 0.72% 0.72%
D 1673 1673 60 60 3.59% 3.59%

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 3082 56.03 251 246 50.6
A 0 226 2190 38.4 251 246 50.6
A 3 137 2102 36.66 251 246 50.6
B 6 159 440353 9603.83 238 233 45.8
B 4 80 78606 1710.17 238 233 45.8
B 0 190 25273 546.4 238 233 45.8
C 0 10 60891 1086.4 235 237 55.8
C 14 238 39479 702.88 235 237 55.8
C 3 233 13774 242.47 235 237 55.8
D 12 233 250598 4365.64 243 238 57.3
D 8 195 84783 1474.25 243 238 57.3
D 2 250 8787 149.07 243 238 57.3

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