ASTROSAT CZTI

Data Quality Report

Orbit 18019

Creation date: 2024-06-27T17:43:56.423331
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_159T01_9000002678_18019cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18019cztM0_level2_quad_clean.evt
Size (bytes)531,276,480106,905,600
Size506.7 MB 102.0 MB
Events in quadrant A3,686,323722,209
Events in quadrant B3,598,197727,123
Events in quadrant C3,703,734680,297
Events in quadrant D4,670,248664,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150562
B0146932
C0149172
D0182522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63601221.918239%
B63601081.698113%
C63601532.405660%
D63601842.893082%

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 7590 6360 3 3 0.04% 0.05%
B 7590 6360 3 3 0.04% 0.05%
C 7590 6360 2 2 0.03% 0.03%
D 7590 6360 71 71 0.94% 1.12%

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 15 174 196986 1092.89 900 889 179.4
A 4 2 27105 146.11 900 889 179.4
A 0 226 7793 38.48 900 889 179.4
B 7 220 74991 442.88 890 872 167.4
B 12 111 18891 107.67 890 872 167.4
B 11 111 16244 91.85 890 872 167.4
C 3 233 213097 1094.48 838 848 193.9
C 14 238 133148 682.22 838 848 193.9
C 0 207 76847 391.9 838 848 193.9
D 5 222 908327 4295.66 860 837 211.3
D 11 176 194663 917.49 860 837 211.3
D 7 238 133367 627.34 860 837 211.3

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