ASTROSAT CZTI

Data Quality Report

Orbit 06964

Creation date: 2024-06-27T15:13:49.034755
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_090T02_9000000956_06964cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06964cztM0_level2_quad_clean.evt
Size (bytes)473,840,64065,957,760
Size451.9 MB 62.9 MB
Events in quadrant A3,246,234383,249
Events in quadrant B3,406,172384,234
Events in quadrant C3,218,647385,406
Events in quadrant D4,016,405369,233

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140973
B0145002
C0141072
D0163632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6814701.027297%
B6814911.335486%
C6814620.909891%
D6814741.085999%

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 7804 6815 0 0 0.00% 0.00%
B 7804 6815 7 7 0.09% 0.10%
C 7804 6815 0 0 0.00% 0.00%
D 7804 6815 8 8 0.10% 0.12%

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 4 2 9109 48.27 839 822 171.7
A 0 226 8000 41.81 839 822 171.7
A 12 194 7630 39.66 839 822 171.7
B 0 189 45222 274.35 843 821 161.8
B 0 187 18837 111.32 843 821 161.8
B 12 111 15565 91.1 843 821 161.8
C 7 247 7366 34.35 820 824 190.4
C 1 16 6647 30.58 820 824 190.4
C 13 61 6486 29.73 820 824 190.4
D 8 195 628724 3105.67 820 795 202.2
D 2 136 103222 506.59 820 795 202.2
D 1 20 77497 379.36 820 795 202.2

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