ASTROSAT CZTI

Data Quality Report

Orbit 27690

Creation date: 2024-06-27T19:43:10.384373
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/AS1T03_262T01_9000003988_27690cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27690cztM0_level2_quad_clean.evt
Size (bytes)540,144,000100,108,800
Size515.1 MB 95.5 MB
Events in quadrant A3,196,750677,370
Events in quadrant B3,391,964689,473
Events in quadrant C3,556,651658,288
Events in quadrant D5,796,271577,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133430
B0139490
C0143990
D0214160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140400.651466%
B6140570.928339%
C61401522.475570%
D614094115.325733%

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 7515 6141 4 4 0.05% 0.07%
B 7515 6141 0 0 0.00% 0.00%
C 7515 6140 37 37 0.49% 0.60%
D 7515 6140 638 638 8.49% 10.39%

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 8 192 13877 80.01 822 808 163.3
A 13 254 10815 61.27 822 808 163.3
A 5 203 9088 50.69 822 808 163.3
B 0 230 111007 731.42 820 801 150.7
B 0 190 49639 324.13 820 801 150.7
B 0 229 17408 110.22 820 801 150.7
C 8 208 282577 1520.06 797 807 185.4
C 14 238 128073 686.56 797 807 185.4
C 15 208 23839 124.25 797 807 185.4
D 1 52 1957674 11256.02 737 720 173.9
D 2 250 375631 2156.42 737 720 173.9
D 6 112 358365 2057.11 737 720 173.9

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