ASTROSAT CZTI

Data Quality Report

Orbit 15942

Creation date: 2024-06-27T17:15:25.064396
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/AS1A04_104T03_9000002348_15942cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15942cztM0_level2_quad_clean.evt
Size (bytes)503,049,60079,810,560
Size479.7 MB 76.1 MB
Events in quadrant A3,580,500475,916
Events in quadrant B4,039,416482,770
Events in quadrant C3,690,695467,173
Events in quadrant D3,408,086462,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157923
B0169242
C0158172
D0157062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7598821.079231%
B75981291.697815%
C75981231.618847%
D7599510.671141%

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 7959 7599 4 4 0.05% 0.05%
B 7959 7600 15 15 0.19% 0.20%
C 7959 7600 2 2 0.03% 0.03%
D 7960 7601 3 3 0.04% 0.04%

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 15 239 48808 254.95 912 891 187.9
A 13 210 20640 105.08 912 891 187.9
A 0 226 8118 38.45 912 891 187.9
B 4 142 149551 831.82 916 893 178.7
B 4 173 114471 635.53 916 893 178.7
B 0 189 93840 520.09 916 893 178.7
C 3 233 138542 659.3 874 880 208.8
C 14 238 131372 624.96 874 880 208.8
C 7 247 13415 60.03 874 880 208.8
D 2 234 34116 152.96 885 859 217.4
D 10 70 17330 75.75 885 859 217.4
D 12 110 14838 64.29 885 859 217.4

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