ASTROSAT CZTI

Data Quality Report

Orbit 16876

Creation date: 2024-06-27T17:29:07.994141
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/AS1A05_074T02_9000002504_16876cztM0_level2.evt modeM0/AS1A05_074T02_9000002504_16876cztM0_level2_quad_clean.evt
Size (bytes)619,286,40063,846,720
Size590.6 MB 60.9 MB
Events in quadrant A3,278,497392,961
Events in quadrant B3,364,309401,380
Events in quadrant C3,356,012386,916
Events in quadrant D8,332,045314,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135353
B0137992
C0139182
D0291202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6260791.261981%
B6260951.517572%
C62601392.220447%
D6260177228.306709%

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 7531 6262 0 0 0.00% 0.00%
B 7531 6262 0 0 0.00% 0.00%
C 7531 6262 0 0 0.00% 0.00%
D 7531 6262 1386 1386 18.40% 22.13%

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 0 226 7518 39.38 851 836 169.7
A 12 189 6561 33.74 851 836 169.7
A 12 194 6088 30.95 851 836 169.7
B 12 111 18394 109.75 854 835 160.0
B 11 111 16014 94.87 854 835 160.0
B 14 111 13884 81.56 854 835 160.0
C 14 238 131643 689.18 825 832 189.8
C 13 61 5801 26.18 825 832 189.8
C 3 233 5268 23.37 825 832 189.8
D 1 52 5169644 28699.58 749 728 180.1
D 12 32 264332 1463.62 749 728 180.1
D 11 66 39902 217.51 749 728 180.1

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