ASTROSAT CZTI

Data Quality Report

Orbit 14453

Creation date: 2024-06-27T16:55:23.081415
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/AS1G08_025T01_9000002130_14453cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14453cztM0_level2_quad_clean.evt
Size (bytes)976,723,200145,033,920
Size931.5 MB 138.3 MB
Events in quadrant A6,447,652905,705
Events in quadrant B6,822,892874,788
Events in quadrant C7,158,185863,241
Events in quadrant D8,284,991862,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271224
B0282883
C0290733
D0330653

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128181491.162428%
B128182331.817756%
C128181381.076611%
D128187545.882353%

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 14078 12818 2 2 0.01% 0.02%
B 14078 12818 43 43 0.31% 0.34%
C 14079 12819 1 1 0.01% 0.01%
D 14079 12819 610 610 4.33% 4.76%

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 12 189 288057 898.93 1556 1522 318.8
A 14 14 64402 197.27 1556 1522 318.8
A 14 31 39587 119.42 1556 1522 318.8
B 0 182 268787 912.28 1537 1496 293.0
B 0 219 133436 450.32 1537 1496 293.0
B 0 189 107269 361.01 1537 1496 293.0
C 3 233 1331968 3878.91 1486 1493 343.0
C 0 207 15714 41.46 1486 1493 343.0
C 7 247 13553 35.16 1486 1493 343.0
D 12 110 1552949 4286.99 1480 1441 361.9
D 10 199 682752 1882.54 1480 1441 361.9
D 2 152 153073 418.98 1480 1441 361.9

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