ASTROSAT CZTI

Data Quality Report

Orbit 20180908_A04_104T03_9000002348_level2

Creation date: 2018-09-18T10:46:16.036951
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_9000002348cztM0_level2_bc.evt modeM0/AS1A04_104T03_9000002348cztM0_level2_quad_clean.evt
Size (bytes)2,008,316,160814,366,080
Size1.9 GB 776.6 MB
Events in quadrant A13,984,9985,166,264
Events in quadrant B15,296,1795,246,792
Events in quadrant C13,355,7165,012,269
Events in quadrant D13,900,3184,933,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012760
B012760
C012760
D012760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01341860
B01388980
C01326940
D01329530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A628338861.410087%
B6283310861.728391%
C628339641.534226%
D628336250.994700%

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 72873 62828 36 36 0.05% 0.06%
B 72874 62829 12 12 0.02% 0.02%
C 72873 62833 0 0 0.00% 0.00%
D 72873 62832 56 56 0.08% 0.09%

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 992914 1390.7 3316 3253 711.6
A 13 34 142682 195.93 3316 3253 711.6
A 13 210 47287 61.88 3316 3253 711.6
B 10 245 637335 1016.9 3352 3267 623.5
B 4 142 353402 561.54 3352 3267 623.5
B 0 189 246471 390.04 3352 3267 623.5
C 3 233 1033908 1407.72 3177 3157 732.2
C 7 247 60108 77.78 3177 3157 732.2
C 0 207 29714 36.27 3177 3157 732.2
D 15 0 301293 404.43 3260 3149 737.2
D 2 234 271924 364.59 3260 3149 737.2
D 13 104 246662 330.32 3260 3149 737.2

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