ASTROSAT CZTI

Data Quality Report

Orbit 15662

Creation date: 2024-06-27T17:11:47.435689
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_084T01_9000002318_15662cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15662cztM0_level2_quad_clean.evt
Size (bytes)459,319,68077,261,760
Size438.0 MB 73.7 MB
Events in quadrant A3,492,532477,410
Events in quadrant B3,292,486482,390
Events in quadrant C3,318,872474,262
Events in quadrant D3,382,662469,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140613
B0133672
C0135612
D0137122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62351622.598236%
B62351392.229350%
C62351862.983160%
D62351502.405774%

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 7491 6237 28 28 0.37% 0.45%
B 7491 6237 0 0 0.00% 0.00%
C 7491 6237 1 1 0.01% 0.02%
D 7491 6237 33 33 0.44% 0.53%

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 296087 1795.94 826 811 164.4
A 7 32 9188 50.95 826 811 164.4
A 0 226 7509 40.74 826 811 164.4
B 0 189 26483 166.02 826 807 154.7
B 12 111 17413 107.38 826 807 154.7
B 11 111 15101 92.43 826 807 154.7
C 14 238 129263 694.83 804 810 184.9
C 3 233 35348 186.82 804 810 184.9
C 9 54 12727 64.46 804 810 184.9
D 1 52 248011 1150.27 807 794 214.9
D 2 234 28347 128.2 807 794 214.9
D 10 70 11584 50.2 807 794 214.9

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