ASTROSAT CZTI

Data Quality Report

Orbit 18195

Creation date: 2024-06-27T17:46:33.434690
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_160T02_9000002710_18195cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18195cztM0_level2_quad_clean.evt
Size (bytes)552,412,80078,194,880
Size526.8 MB 74.6 MB
Events in quadrant A3,705,819490,621
Events in quadrant B3,694,640493,328
Events in quadrant C4,784,378462,687
Events in quadrant D4,099,715462,941

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148223
B0148752
C0183562
D0161802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65731692.571124%
B65731432.175567%
C65734777.256960%
D65732493.788225%

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 7873 6574 28 28 0.36% 0.43%
B 7873 6574 1 1 0.01% 0.02%
C 7873 6574 189 189 2.40% 2.87%
D 7873 6574 116 116 1.47% 1.76%

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 184678 1004.15 913 897 183.0
A 15 174 8968 44.1 913 897 183.0
A 0 226 8090 39.3 913 897 183.0
B 4 171 84415 495.57 896 875 168.6
B 7 220 36051 208.67 896 875 168.6
B 0 189 32204 185.85 896 875 168.6
C 4 254 1332889 6814.71 847 855 195.5
C 14 238 133043 676.28 847 855 195.5
C 4 238 6520 28.98 847 855 195.5
D 7 238 381561 1773.67 882 855 214.6
D 10 70 146198 677.14 882 855 214.6
D 11 176 71952 331.23 882 855 214.6

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