ASTROSAT CZTI

Data Quality Report

Orbit 29147

Creation date: 2024-06-27T20:00:48.650610
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/AS1A10_099T01_9000004184_29147cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29147cztM0_level2_quad_clean.evt
Size (bytes)477,596,16079,024,320
Size455.5 MB 75.4 MB
Events in quadrant A3,168,630489,268
Events in quadrant B3,395,498497,357
Events in quadrant C3,317,717477,282
Events in quadrant D4,131,569466,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135311
B0141211
C0137151
D0164801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6639570.858563%
B6639791.189938%
C6639991.491188%
D66391382.078626%

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 7514 6640 0 0 0.00% 0.00%
B 7514 6640 8 8 0.11% 0.12%
C 7514 6640 0 0 0.00% 0.00%
D 7514 6640 89 89 1.18% 1.34%

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 13 254 11711 65.41 820 800 166.8
A 3 137 7968 42.97 820 800 166.8
A 0 226 7039 37.4 820 800 166.8
B 10 246 83238 523.77 811 789 157.4
B 0 190 82279 517.68 811 789 157.4
B 10 245 29492 182.34 811 789 157.4
C 14 238 130512 699.27 790 795 185.5
C 3 233 85258 455.32 790 795 185.5
C 2 114 15214 77.73 790 795 185.5
D 1 52 815558 4308.08 797 772 189.1
D 8 195 217954 1148.32 797 772 189.1
D 2 120 34397 177.79 797 772 189.1

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