ASTROSAT CZTI

Data Quality Report

Orbit 09490

Creation date: 2024-06-27T15:46:45.559566
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/AS1A03_005T01_9000001348_09490cztM0_level2.evt modeM0/AS1A03_005T01_9000001348_09490cztM0_level2_quad_clean.evt
Size (bytes)1,529,654,400247,049,280
Size1.4 GB 235.6 MB
Events in quadrant A11,995,6011,517,326
Events in quadrant B9,363,1171,540,381
Events in quadrant C10,874,1821,527,446
Events in quadrant D12,709,9361,487,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511652194
B0433461499
C0484741985
D0540612252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043212
B043212
C043216
D043218

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204172081.018759%
B205171500.731101%
C204574872.380603%
D204163541.733934%

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 22814 21071 9 9 0.04% 0.04%
B 22815 21140 0 0 0.00% 0.00%
C 22815 21105 251 251 1.10% 1.19%
D 22815 21103 207 207 0.91% 0.98%

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 5 2243828 4661.33 2364 2314 480.9
A 1 162 334974 691.78 2364 2314 480.9
A 1 178 123586 252.19 2364 2314 480.9
B 4 173 124721 270.54 2379 2321 452.4
B 12 111 53032 112.08 2379 2321 452.4
B 11 111 43320 90.62 2379 2321 452.4
C 4 254 1734355 3266.51 2296 2313 530.2
C 9 68 178282 331.86 2296 2313 530.2
C 13 61 16844 27.4 2296 2313 530.2
D 8 195 1837555 3205.86 2285 2231 572.5
D 1 52 811338 1413.31 2285 2231 572.5
D 2 136 508242 883.88 2285 2231 572.5

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