ASTROSAT CZTI

Data Quality Report

Orbit 15992

Creation date: 2024-06-27T17:16:14.603154
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/AS1T02_090T01_9000002360_15992cztM0_level2.evt modeM0/AS1T02_090T01_9000002360_15992cztM0_level2_quad_clean.evt
Size (bytes)138,962,8805,791,680
Size132.5 MB 5.5 MB
Events in quadrant A938,02915,631
Events in quadrant B1,169,37815,387
Events in quadrant C954,86714,947
Events in quadrant D1,039,11014,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037982
B046981
C039511
D042311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1536211.367188%
B1536412.669271%
C1536332.148438%
D1536241.562500%

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 1537 1537 1 1 0.07% 0.07%
B 1537 1537 15 15 0.98% 0.98%
C 1537 1537 0 0 0.00% 0.00%
D 1537 1537 3 3 0.20% 0.20%

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 15 157 12298 249.73 238 234 48.3
A 12 96 5029 99.26 238 234 48.3
A 15 174 4512 88.56 238 234 48.3
B 10 245 106491 2346.94 232 228 45.3
B 7 220 63627 1400.24 232 228 45.3
B 0 245 23907 522.98 232 228 45.3
C 14 238 35367 668.51 224 226 52.6
C 9 236 22883 431.02 224 226 52.6
C 3 233 11784 219.87 224 226 52.6
D 12 110 73743 1255.7 232 224 58.5
D 2 152 41285 701.32 232 224 58.5
D 9 85 19029 321.19 232 224 58.5

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