ASTROSAT CZTI

Data Quality Report

Orbit 17819

Creation date: 2024-06-27T17:41:17.216306
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/AS1A05_015T01_9000002650_17819cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17819cztM0_level2_quad_clean.evt
Size (bytes)468,829,440104,048,640
Size447.1 MB 99.2 MB
Events in quadrant A3,131,123678,601
Events in quadrant B3,916,114700,800
Events in quadrant C3,229,330667,196
Events in quadrant D3,477,395648,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135862
B0157702
C0137752
D0149552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6538380.581217%
B65383375.154481%
C6538831.269501%
D6538691.055369%

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 7853 6539 0 0 0.00% 0.00%
B 7853 6539 187 187 2.38% 2.86%
C 7853 6539 0 0 0.00% 0.00%
D 7853 6539 40 40 0.51% 0.61%

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 0 226 7038 38.26 815 799 163.0
A 12 194 5841 30.92 815 799 163.0
A 3 137 5744 30.33 815 799 163.0
B 10 245 598838 3954.47 809 791 151.2
B 15 222 109705 720.17 809 791 151.2
B 0 230 29935 192.71 809 791 151.2
C 14 238 124893 681.34 788 796 182.1
C 5 218 11845 60.66 788 796 182.1
C 9 160 8179 40.54 788 796 182.1
D 10 70 269799 1436.39 783 762 187.3
D 7 238 151120 802.76 783 762 187.3
D 1 52 73752 389.69 783 762 187.3

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