ASTROSAT CZTI

Data Quality Report

Orbit 23657

Creation date: 2024-06-27T18:57:16.724814
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/AS1A07_091T04_9000003492_23657cztM0_level2.evt modeM0/AS1A07_091T04_9000003492_23657cztM0_level2_quad_clean.evt
Size (bytes)1,418,808,960241,312,320
Size1.3 GB 230.1 MB
Events in quadrant A9,267,1501,504,739
Events in quadrant B10,403,3221,535,519
Events in quadrant C9,399,6851,481,766
Events in quadrant D12,562,8911,424,878

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404364
B0433694
C0406834
D0511334

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197632481.254870%
B197634102.074584%
C197643171.603926%
D197647533.809957%

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 22338 19765 0 0 0.00% 0.00%
B 22338 19764 99 99 0.44% 0.50%
C 22339 19766 0 0 0.00% 0.00%
D 22339 19766 399 399 1.79% 2.02%

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 13 254 31378 60.43 2403 2346 480.4
A 3 137 21249 39.34 2403 2346 480.4
A 0 226 20748 38.3 2403 2346 480.4
B 0 189 532219 1180.94 2384 2321 448.7
B 0 229 199449 439.32 2384 2321 448.7
B 3 64 196591 432.95 2384 2321 448.7
C 14 238 367955 690.23 2293 2304 529.8
C 7 247 90291 166.09 2293 2304 529.8
C 13 61 16067 25.98 2293 2304 529.8
D 9 85 1748746 3135.14 2304 2234 557.1
D 1 52 1325101 2374.66 2304 2234 557.1
D 12 233 281892 502.01 2304 2234 557.1

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