ASTROSAT CZTI

Data Quality Report

Orbit 19903

Creation date: 2024-06-27T18:08:33.606115
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_064T01_9000002964_19903cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19903cztM0_level2_quad_clean.evt
Size (bytes)627,024,960110,283,840
Size598.0 MB 105.2 MB
Events in quadrant A2,843,396759,168
Events in quadrant B3,206,561778,096
Events in quadrant C3,552,078758,286
Events in quadrant D8,979,699623,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124091
B0134531
C0144182
D0308091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6017190.315772%
B6018360.598205%
C60172093.473492%
D6017199933.222536%

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 7357 6018 3 3 0.04% 0.05%
B 7358 6019 8 8 0.11% 0.13%
C 7357 6017 89 89 1.21% 1.48%
D 7357 6017 2093 2093 28.45% 34.78%

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 9 143 15183 97.78 735 720 147.9
A 0 226 6411 38.47 735 720 147.9
A 12 194 5436 31.88 735 720 147.9
B 0 190 88584 635.77 745 724 138.2
B 4 216 79359 569.02 745 724 138.2
B 0 197 33354 236.12 745 724 138.2
C 9 221 589215 3490.16 728 735 168.6
C 14 238 114645 675.58 728 735 168.6
C 13 61 5041 25.54 728 735 168.6
D 2 184 5870634 36757.44 663 644 159.7
D 7 38 229853 1435.29 663 644 159.7
D 5 222 118491 737.95 663 644 159.7

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