ASTROSAT CZTI

Data Quality Report

Orbit 18058

Creation date: 2024-06-27T17:44:29.503667
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/AS1A06_003T04_9000002682_18058cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18058cztM0_level2_quad_clean.evt
Size (bytes)1,258,395,840211,904,640
Size1.2 GB 202.1 MB
Events in quadrant A8,519,5601,313,070
Events in quadrant B8,907,7271,325,391
Events in quadrant C8,874,6061,265,561
Events in quadrant D10,572,6721,253,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372974
B0381194
C0378724
D0438074

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182781030.563519%
B182781770.968377%
C182782021.105154%
D182784922.691761%

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 20418 18281 3 3 0.01% 0.02%
B 20418 18281 22 22 0.11% 0.12%
C 20418 18281 9 9 0.04% 0.05%
D 20418 18281 334 334 1.64% 1.83%

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 15 174 83943 185.53 2190 2136 440.9
A 0 226 19102 38.48 2190 2136 440.9
A 3 137 16895 33.47 2190 2136 440.9
B 3 64 255620 603.25 2186 2130 420.2
B 12 111 51055 116.43 2186 2130 420.2
B 11 111 44553 100.96 2186 2130 420.2
C 14 238 324803 654.51 2100 2111 493.0
C 0 207 223453 448.94 2100 2111 493.0
C 3 233 103866 206.39 2100 2111 493.0
D 5 222 1462356 2845.3 2119 2058 513.2
D 11 176 616346 1196.9 2119 2058 513.2
D 10 199 99243 189.36 2119 2058 513.2

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