ASTROSAT CZTI

Data Quality Report

Orbit 16285

Creation date: 2024-06-27T17:20:22.262189
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/AS1A05_072T05_9000002394_16285cztM0_level2.evt modeM0/AS1A05_072T05_9000002394_16285cztM0_level2_quad_clean.evt
Size (bytes)493,375,68091,762,560
Size470.5 MB 87.5 MB
Events in quadrant A3,558,583579,158
Events in quadrant B3,533,321594,661
Events in quadrant C3,411,507585,736
Events in quadrant D4,003,142572,032

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143673
B0142742
C0138722
D0158972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64122173.384279%
B64121752.729258%
C64121953.041173%
D64121732.698066%

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 7578 6414 52 52 0.69% 0.81%
B 7578 6414 3 3 0.04% 0.05%
C 7578 6414 0 0 0.00% 0.00%
D 7578 6414 63 63 0.83% 0.98%

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 257278 1483.78 858 842 172.8
A 0 226 7569 38.92 858 842 172.8
A 12 194 6312 31.65 858 842 172.8
B 0 189 71103 431.69 859 839 162.8
B 15 35 59458 360.15 859 839 162.8
B 0 198 30710 183.52 859 839 162.8
C 14 238 130444 677.0 829 834 191.4
C 3 233 40476 207.07 829 834 191.4
C 0 207 7350 34.04 829 834 191.4
D 1 52 723344 3519.11 847 825 205.3
D 10 70 67238 323.47 847 825 205.3
D 2 234 22247 104.34 847 825 205.3

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