ASTROSAT CZTI

Data Quality Report

Orbit 06830

Creation date: 2024-06-27T15:12:07.317457
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_174T04_9000000938_06830cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06830cztM0_level2_quad_clean.evt
Size (bytes)554,857,92063,696,960
Size529.2 MB 60.7 MB
Events in quadrant A3,551,160371,758
Events in quadrant B4,151,370379,272
Events in quadrant C3,482,193373,185
Events in quadrant D5,180,968353,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146602
B0163911
C0143561
D0201111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64721271.962299%
B64723385.222497%
C64721011.560569%
D64722674.125464%

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 7727 6473 31 31 0.40% 0.48%
B 7727 6473 212 212 2.74% 3.28%
C 7727 6473 20 20 0.26% 0.31%
D 7727 6473 161 161 2.08% 2.49%

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 331197 1943.34 837 821 170.0
A 12 194 8118 42.92 837 821 170.0
A 0 226 8050 42.52 837 821 170.0
B 0 228 879796 5628.27 829 811 156.2
B 0 214 35188 220.12 829 811 156.2
B 12 111 14853 89.91 829 811 156.2
C 12 16 164696 873.24 816 821 187.7
C 9 247 46940 245.76 816 821 187.7
C 9 16 33681 175.1 816 821 187.7
D 12 233 711858 3583.79 811 785 198.4
D 8 195 625688 3149.49 811 785 198.4
D 2 33 345888 1739.31 811 785 198.4

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