ASTROSAT CZTI

Data Quality Report

Orbit 26910

Creation date: 2024-06-27T19:34:21.649036
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/AS1A09_044T01_9000003888_26910cztM0_level2.evt modeM0/AS1A09_044T01_9000003888_26910cztM0_level2_quad_clean.evt
Size (bytes)637,652,16067,763,520
Size608.1 MB 64.6 MB
Events in quadrant A3,346,969447,999
Events in quadrant B7,852,944312,070
Events in quadrant C3,271,638448,300
Events in quadrant D4,432,791422,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134160
B0273040
C0131000
D0171230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6014250.415697%
B6015196032.585204%
C6015871.446384%
D60152093.474647%

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 7374 6015 6 6 0.08% 0.10%
B 7375 6015 1672 1672 22.67% 27.80%
C 7375 6016 0 0 0.00% 0.00%
D 7375 6015 172 172 2.33% 2.86%

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 0 13 168784 1029.93 820 806 163.1
A 8 192 15572 90.54 820 806 163.1
A 13 254 9029 50.42 820 806 163.1
B 0 189 4702228 36110.24 703 688 130.2
B 10 245 334727 2565.59 703 688 130.2
B 0 190 50913 385.75 703 688 130.2
C 14 238 130761 710.73 801 810 182.8
C 15 208 18290 95.6 801 810 182.8
C 13 61 5540 25.87 801 810 182.8
D 1 52 994316 5322.9 788 771 186.7
D 15 36 226775 1210.81 788 771 186.7
D 2 250 74468 394.83 788 771 186.7

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