ASTROSAT CZTI

Data Quality Report

Orbit 07860

Creation date: 2024-06-27T15:24:54.707583
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/AS1G06_077T02_9000001076_07860cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07860cztM0_level2_quad_clean.evt
Size (bytes)465,134,40097,548,480
Size443.6 MB 93.0 MB
Events in quadrant A3,220,284617,434
Events in quadrant B3,435,634643,442
Events in quadrant C3,652,793632,153
Events in quadrant D3,325,768597,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139613
B0145132
C0150852
D0143592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6661410.615523%
B6661851.276085%
C6661861.291097%
D6661711.065906%

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 7921 6663 2 2 0.03% 0.03%
B 7921 6663 29 29 0.37% 0.44%
C 7921 6663 14 14 0.18% 0.21%
D 7921 6663 37 37 0.47% 0.56%

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 15 234 67058 408.3 812 795 162.3
A 15 174 16127 94.47 812 795 162.3
A 0 226 7797 43.15 812 795 162.3
B 4 239 107246 687.98 825 806 154.7
B 4 173 74898 478.9 825 806 154.7
B 15 204 19439 120.44 825 806 154.7
C 1 16 498420 2690.22 804 809 185.0
C 8 229 11938 60.17 804 809 185.0
C 13 61 6202 29.16 804 809 185.0
D 1 52 182321 937.48 796 773 193.7
D 2 152 79417 406.1 796 773 193.7
D 13 104 32091 161.72 796 773 193.7

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