ASTROSAT CZTI

Data Quality Report

Orbit 23825

Creation date: 2024-06-27T18:59:07.880200
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/AS1A07_113T01_9000003526_23825cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23825cztM0_level2_quad_clean.evt
Size (bytes)405,921,60047,013,120
Size387.1 MB 44.8 MB
Events in quadrant A1,875,203323,021
Events in quadrant B1,929,011326,374
Events in quadrant C1,976,509323,941
Events in quadrant D6,281,929209,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043
B054
C053
D065

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09222
B09222
C09123
D09323

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104702689
B0107002789
C0108622786
D03079710015

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3471110.316912%
B3434170.495050%
C3458561.619433%
D3137217469.301881%

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 4799 3675 0 0 0.00% 0.00%
B 4796 3629 2 2 0.04% 0.06%
C 4800 3653 0 0 0.00% 0.00%
D 4793 3339 2053 2053 42.83% 61.49%

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 6267 60.0 486 479 96.5
A 0 226 4236 38.95 486 479 96.5
A 3 137 3672 33.1 486 479 96.5
B 3 64 17568 190.65 480 470 89.7
B 0 189 17301 187.67 480 470 89.7
B 12 111 9936 105.55 480 470 89.7
C 14 238 77500 693.59 477 482 111.0
C 0 10 22015 193.92 477 482 111.0
C 0 207 8871 75.55 477 482 111.0
D 13 174 2943022 40023.38 304 297 73.5
D 8 195 1293352 17586.57 304 297 73.5
D 1 52 569592 7742.86 304 297 73.5

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