ASTROSAT CZTI

Data Quality Report

Orbit 28139

Creation date: 2024-06-27T19:48:29.670857
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/AS1A10_045T04_9000004066_28139cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28139cztM0_level2_quad_clean.evt
Size (bytes)478,575,36088,067,520
Size456.4 MB 84.0 MB
Events in quadrant A3,047,656575,000
Events in quadrant B3,285,775597,111
Events in quadrant C3,087,185559,227
Events in quadrant D4,673,174523,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124560
B0133370
C0125630
D0176850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5896400.678426%
B5896530.898915%
C5896711.204206%
D58962965.020353%

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 7206 5897 3 3 0.04% 0.05%
B 7206 5897 1 1 0.01% 0.02%
C 7206 5897 0 0 0.00% 0.00%
D 7206 5897 247 247 3.43% 4.19%

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 29296 185.0 776 762 154.2
A 0 13 20066 125.16 776 762 154.2
A 13 254 10690 64.37 776 762 154.2
B 15 32 184799 1280.4 774 758 143.7
B 10 245 35862 244.22 774 758 143.7
B 10 246 17749 118.21 774 758 143.7
C 14 238 122944 706.28 744 752 173.0
C 2 16 46901 266.75 744 752 173.0
C 3 233 11206 60.43 744 752 173.0
D 1 52 1543230 8935.78 730 712 172.6
D 8 195 240170 1387.17 730 712 172.6
D 2 250 67343 385.99 730 712 172.6

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