ASTROSAT CZTI

Data Quality Report

Orbit 03835

Creation date: 2024-06-27T14:34:10.060301
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/AS1G05_189T01_9000000492_03835cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03835cztM0_level2_quad_clean.evt
Size (bytes)9,627,8402,514,240
Size9.2 MB 2.4 MB
Events in quadrant A41,1006,137
Events in quadrant B69,94515,092
Events in quadrant C83,91715,812
Events in quadrant D79,81616,626

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092919128
B086958421
C084088056
D087978460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B1130
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08350
B08352
C08353
D08353

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8211.219512%
B13700.000000%
C17710.564972%
D16900.000000%

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 5456 161 0 0 0.00% 0.00%
B 5593 271 0 0 0.00% 0.00%
C 5610 352 0 0 0.00% 0.00%
D 5617 335 0 0 0.00% 0.00%

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 15 234 695 177.54 10 10 3.9
A 15 174 176 43.02 10 10 3.9
A 12 194 118 27.99 10 10 3.9
B 15 204 3211 607.66 16 16 5.3
B 14 167 705 131.04 16 16 5.3
B 0 173 449 82.35 16 16 5.3
C 2 53 479 67.21 21 21 6.8
C 10 65 257 34.63 21 21 6.8
C 13 61 162 20.69 21 21 6.8
D 13 248 845 119.97 20 19 6.9
D 7 223 445 61.88 20 19 6.9
D 2 206 405 56.07 20 19 6.9

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