ASTROSAT CZTI

Data Quality Report

Orbit 20437

Creation date: 2024-06-27T18:15:24.819940
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_188T01_9000003018_20437cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20437cztM0_level2_quad_clean.evt
Size (bytes)453,539,52076,826,880
Size432.5 MB 73.3 MB
Events in quadrant A3,251,402484,971
Events in quadrant B3,377,510495,842
Events in quadrant C3,304,151465,522
Events in quadrant D3,384,520450,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133012
B0136712
C0133662
D0138313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6152330.536411%
B6152310.503901%
C6152500.812744%
D6151631.024224%

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 7532 6152 0 0 0.00% 0.00%
B 7532 6153 2 2 0.03% 0.03%
C 7532 6153 3 3 0.04% 0.05%
D 7531 6152 52 52 0.69% 0.85%

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 7458 40.08 845 833 165.3
A 3 137 6530 34.46 845 833 165.3
A 12 194 5781 29.93 845 833 165.3
B 10 245 30064 189.78 844 828 154.0
B 12 111 18122 112.26 844 828 154.0
B 11 111 16017 98.6 844 828 154.0
C 14 238 131566 717.67 798 806 182.2
C 3 247 47730 257.54 798 806 182.2
C 3 233 8882 44.32 798 806 182.2
D 7 96 177295 924.87 800 778 190.9
D 1 52 172069 897.49 800 778 190.9
D 2 234 26047 132.4 800 778 190.9

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