ASTROSAT CZTI

Data Quality Report

Orbit 29265

Creation date: 2024-06-27T20:02:01.053361
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/AS1A10_045T08_9000004208_29265cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29265cztM0_level2_quad_clean.evt
Size (bytes)2,550,769,920319,276,800
Size2.4 GB 304.5 MB
Events in quadrant A13,068,5101,997,439
Events in quadrant B14,097,6602,037,190
Events in quadrant C22,589,4171,897,215
Events in quadrant D25,692,1241,893,601

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05460
B05460
C05460
D05460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0557824
B0593284
C0864164
D0947314

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268122410.898851%
B268133681.372469%
C2681322858.521986%
D26812288910.775026%

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 32448 26818 72 72 0.22% 0.27%
B 32449 26819 60 60 0.18% 0.22%
C 32449 26817 133 133 0.41% 0.50%
D 32448 26818 2131 2131 6.57% 7.95%

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 311263 468.48 3287 3219 657.5
A 1 113 69533 100.85 3287 3219 657.5
A 13 254 49085 69.75 3287 3219 657.5
B 0 229 448563 715.78 3255 3168 622.3
B 10 245 351671 560.07 3255 3168 622.3
B 0 183 204183 323.04 3255 3168 622.3
C 3 233 9247036 12955.75 3065 3092 713.5
C 14 238 795243 1110.23 3065 3092 713.5
C 14 254 440303 612.77 3065 3092 713.5
D 1 52 8474852 10655.04 3043 2995 795.1
D 8 195 2825458 3549.81 3043 2995 795.1
D 7 223 1305581 1638.26 3043 2995 795.1

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