ASTROSAT CZTI

Data Quality Report

Orbit 06151

Creation date: 2024-06-27T15:03:26.807233
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/AS1A02_199T01_9000000800_06151cztM0_level2.evt modeM0/AS1A02_199T01_9000000800_06151cztM0_level2_quad_clean.evt
Size (bytes)1,330,277,760287,622,720
Size1.2 GB 274.3 MB
Events in quadrant A8,826,1471,904,932
Events in quadrant B10,346,0841,906,929
Events in quadrant C8,374,4271,860,091
Events in quadrant D11,481,9961,756,506

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389355
B0433404
C0379774
D0470164

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186211770.950540%
B186213011.616455%
C18621790.424252%
D186217283.909564%

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 23823 18624 43 43 0.18% 0.23%
B 23823 18625 152 152 0.64% 0.82%
C 23823 18625 3 3 0.01% 0.02%
D 23823 18624 519 519 2.18% 2.79%

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 15 294419 671.51 2174 2130 435.3
A 15 236 96795 217.48 2174 2130 435.3
A 14 111 31511 67.5 2174 2130 435.3
B 3 64 1140110 2824.07 2179 2131 403.0
B 0 219 307740 758.42 2179 2131 403.0
B 0 214 158233 387.39 2179 2131 403.0
C 9 16 33830 65.63 2129 2137 482.9
C 1 16 20224 37.46 2129 2137 482.9
C 13 61 17149 31.09 2129 2137 482.9
D 13 169 3157384 6240.7 2090 2026 505.6
D 5 97 151925 296.47 2090 2026 505.6
D 8 195 101422 196.59 2090 2026 505.6

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