ASTROSAT CZTI

Data Quality Report

Orbit 08055

Creation date: 2024-06-27T15:27:21.638665
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/AS1A02_055T01_9000001114_08055cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08055cztM0_level2_quad_clean.evt
Size (bytes)850,095,360161,847,360
Size810.7 MB 154.3 MB
Events in quadrant A5,791,007989,275
Events in quadrant B6,849,8481,019,116
Events in quadrant C5,609,7861,029,096
Events in quadrant D6,627,853979,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262333
B0287682
C0258602
D0286762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128001200.937500%
B128002622.046875%
C12800660.515625%
D128001861.453125%

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 13925 12803 5 5 0.04% 0.04%
B 13925 12803 98 98 0.70% 0.77%
C 13925 12803 0 0 0.00% 0.00%
D 13925 12803 85 85 0.61% 0.66%

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 4 2 154287 509.37 1459 1422 300.1
A 15 234 14353 43.09 1459 1422 300.1
A 0 226 13800 41.24 1459 1422 300.1
B 4 239 598463 2144.6 1472 1437 278.4
B 4 81 215041 767.29 1472 1437 278.4
B 10 16 68222 239.9 1472 1437 278.4
C 1 16 34409 99.62 1429 1431 331.0
C 13 61 10739 28.12 1429 1431 331.0
C 8 222 6461 15.19 1429 1431 331.0
D 13 105 399025 1075.49 1406 1370 369.7
D 1 52 365807 985.65 1406 1370 369.7
D 4 95 162130 434.79 1406 1370 369.7

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