ASTROSAT CZTI

Data Quality Report

Orbit 34214

Creation date: 2022-01-25T22:08:48.676491
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/AS1T04_086T01_9000004884_34214cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34214cztM0_level2_quad_clean.evt
Size (bytes)529,660,80069,151,680
Size505.1 MB 65.9 MB
Events in quadrant A2,569,535441,703
Events in quadrant B3,795,043434,964
Events in quadrant C4,137,923421,760
Events in quadrant D5,163,725408,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113413
B0148422
C0157292
D0191432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5526170.307637%
B55263085.573652%
C55263977.184220%
D55262965.356497%

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 7107 5526 4 4 0.06% 0.07%
B 7107 5526 190 190 2.67% 3.44%
C 7107 5526 280 280 3.94% 5.07%
D 7107 5526 237 237 3.33% 4.29%

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 56504 437.45 634 617 127.8
A 10 83 23377 178.15 634 617 127.8
A 13 6 18224 137.82 634 617 127.8
B 5 172 1081891 9079.1 617 600 119.1
B 5 31 154060 1288.53 617 600 119.1
B 5 15 24882 203.88 617 600 119.1
C 4 254 1086377 7758.84 604 610 139.9
C 15 214 231720 1651.5 604 610 139.9
C 9 69 206810 1473.5 604 610 139.9
D 8 195 1310926 8714.98 615 597 150.4
D 2 250 489557 3252.07 615 597 150.4
D 10 118 298070 1978.49 615 597 150.4

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