ASTROSAT CZTI

Data Quality Report

Orbit 17762

Creation date: 2024-06-27T17:41:28.835599
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/AS1T03_070T09_9000002648_17762cztM0_level2.evt modeM0/AS1T03_070T09_9000002648_17762cztM0_level2_quad_clean.evt
Size (bytes)500,780,16077,688,000
Size477.6 MB 74.1 MB
Events in quadrant A3,308,049478,280
Events in quadrant B3,587,774485,271
Events in quadrant C3,782,927454,188
Events in quadrant D4,014,890449,849

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143952
B0150802
C0155182
D0168262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6952660.949367%
B69521241.783659%
C69532273.264778%
D69532924.199626%

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 9337 6954 0 0 0.00% 0.00%
B 9337 6954 11 11 0.12% 0.16%
C 9338 6955 63 63 0.67% 0.91%
D 9338 6955 236 236 2.53% 3.39%

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 0 226 7337 37.17 860 842 174.7
A 3 137 6316 31.33 860 842 174.7
A 12 194 6165 30.46 860 842 174.7
B 7 220 80951 485.65 863 844 164.9
B 0 219 72536 434.63 863 844 164.9
B 0 230 42218 250.83 863 844 164.9
C 4 254 365873 1908.55 818 824 191.3
C 14 238 127991 664.85 818 824 191.3
C 5 218 62430 322.09 818 824 191.3
D 7 238 821111 4122.79 813 790 199.0
D 2 152 55019 272.55 813 790 199.0
D 2 165 26328 128.35 813 790 199.0

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