ASTROSAT CZTI

Data Quality Report

Orbit 27615

Creation date: 2024-06-27T19:42:11.413206
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/AS1T03_257T01_9000003976_27615cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27615cztM0_level2_quad_clean.evt
Size (bytes)492,920,64095,402,880
Size470.1 MB 91.0 MB
Events in quadrant A3,120,628625,066
Events in quadrant B4,037,896635,147
Events in quadrant C3,265,600600,892
Events in quadrant D4,065,417577,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135320
B0162490
C0138910
D0165350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461310.479802%
B64611051.625135%
C6461661.021514%
D64611352.089460%

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 7611 6462 1 1 0.01% 0.02%
B 7611 6462 60 60 0.79% 0.93%
C 7611 6462 3 3 0.04% 0.05%
D 7611 6462 127 127 1.67% 1.97%

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 8 192 12059 69.96 805 790 161.1
A 13 254 10810 62.21 805 790 161.1
A 3 137 7391 40.98 805 790 161.1
B 3 64 666355 4440.6 803 784 149.9
B 10 245 67219 443.25 803 784 149.9
B 0 230 57537 378.65 803 784 149.9
C 14 238 124371 681.86 778 783 181.3
C 2 16 95279 521.35 778 783 181.3
C 10 22 6371 30.83 778 783 181.3
D 1 52 609854 3295.82 776 754 184.8
D 7 80 151272 814.45 776 754 184.8
D 6 112 126796 682.01 776 754 184.8

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