ASTROSAT CZTI

Data Quality Report

Orbit 14256

Creation date: 2024-06-27T16:52:32.857561
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/AS1G08_014T01_9000002104_14256cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14256cztM0_level2_quad_clean.evt
Size (bytes)1,832,045,760302,538,240
Size1.7 GB 288.5 MB
Events in quadrant A11,942,2671,948,492
Events in quadrant B13,388,1381,944,255
Events in quadrant C12,229,9181,858,142
Events in quadrant D16,363,8651,820,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497376
B0542765
C0496025
D0650235

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231491690.730053%
B231495992.587585%
C231491760.760292%
D231493471.498985%

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 28526 23157 2 2 0.01% 0.01%
B 28526 23157 244 244 0.86% 1.05%
C 28526 23157 23 23 0.08% 0.10%
D 28526 23157 104 104 0.36% 0.45%

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 300580 508.32 2936 2879 585.7
A 12 189 297247 502.62 2936 2879 585.7
A 9 143 28234 43.29 2936 2879 585.7
B 0 182 678860 1255.73 2887 2818 538.4
B 10 245 636869 1177.73 2887 2818 538.4
B 0 229 521412 963.27 2887 2818 538.4
C 3 233 1204187 1856.19 2823 2842 647.2
C 13 61 20088 26.65 2823 2842 647.2
C 14 234 15361 19.34 2823 2842 647.2
D 8 195 2285416 3435.46 2830 2764 664.4
D 13 122 1942974 2920.07 2830 2764 664.4
D 5 222 544565 815.43 2830 2764 664.4

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