ASTROSAT CZTI

Data Quality Report

Orbit 18237

Creation date: 2024-06-27T17:47:12.836792
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_019T01_9000002718_18237cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18237cztM0_level2_quad_clean.evt
Size (bytes)19,900,8002,090,880
Size19.0 MB 2.0 MB
Events in quadrant A130,9829,549
Events in quadrant B129,2269,765
Events in quadrant C128,5049,129
Events in quadrant D193,0828,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05050
C05110
D07404

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25010.400000%
B25000.000000%
C25020.800000%
D249145.622490%

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 250 250 0 0 0.00% 0.00%
B 250 250 0 0 0.00% 0.00%
C 250 250 0 0 0.00% 0.00%
D 249 249 12 12 4.82% 4.82%

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 11 29 542 57.5 33 33 8.9
A 0 226 287 28.69 33 33 8.9
A 3 137 251 24.63 33 33 8.9
B 12 111 714 80.92 33 32 8.4
B 11 111 657 74.16 33 32 8.4
B 14 111 601 67.51 33 32 8.4
C 14 238 5024 553.34 31 31 9.0
C 7 174 1237 133.65 31 31 9.0
C 13 61 256 24.94 31 31 9.0
D 1 52 75499 8002.05 31 29 9.4
D 2 234 795 81.22 31 29 9.4
D 14 226 289 27.57 31 29 9.4

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