ASTROSAT CZTI

Data Quality Report

Orbit 19748

Creation date: 2024-06-27T18:06:29.525954
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/AS1C04_001T01_9000002948_19748cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19748cztM0_level2_quad_clean.evt
Size (bytes)395,334,72087,353,280
Size377.0 MB 83.3 MB
Events in quadrant A2,396,919582,975
Events in quadrant B2,618,836590,970
Events in quadrant C2,940,409570,314
Events in quadrant D3,668,293542,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01031
C01031
D01042

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01064751
B01121059
C01207254
D014654120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51142314.517012%
B51152795.454545%
C51122615.105634%
D511158911.524164%

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 5355 5121 0 0 0.00% 0.00%
B 5355 5121 22 22 0.41% 0.43%
C 5354 5118 0 0 0.00% 0.00%
D 5354 5117 371 371 6.93% 7.25%

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 12 16 23346 183.05 607 592 124.3
A 0 23 21263 166.29 607 592 124.3
A 12 194 7916 58.92 607 592 124.3
B 7 220 127894 1093.22 607 590 116.4
B 3 64 33937 286.36 607 590 116.4
B 0 197 33164 279.73 607 590 116.4
C 3 233 512128 3752.69 585 587 136.3
C 14 238 90303 658.16 585 587 136.3
C 7 247 33232 239.49 585 587 136.3
D 1 52 1362107 9716.35 572 553 140.1
D 7 38 58308 412.15 572 553 140.1
D 10 230 31972 224.21 572 553 140.1

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