ASTROSAT CZTI

Data Quality Report

Orbit 15925

Creation date: 2024-06-27T17:15:26.924977
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_066T02_9000002346_15925cztM0_level2.evt modeM0/AS1G08_066T02_9000002346_15925cztM0_level2_quad_clean.evt
Size (bytes)298,814,40043,928,640
Size285.0 MB 41.9 MB
Events in quadrant A2,423,210261,738
Events in quadrant B2,179,979271,279
Events in quadrant C2,164,870256,342
Events in quadrant D2,003,647253,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098121
B089750
C088430
D086600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4078811.986268%
B4078811.986268%
C4078842.059833%
D4078300.735655%

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 4549 4080 11 11 0.24% 0.27%
B 4549 4080 1 1 0.02% 0.02%
C 4549 4080 0 0 0.00% 0.00%
D 4549 4080 5 5 0.11% 0.12%

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 15 239 420806 3941.41 519 507 106.6
A 0 226 4462 37.09 519 507 106.6
A 12 194 3900 31.82 519 507 106.6
B 0 189 56472 548.38 524 510 102.1
B 4 216 34781 335.82 524 510 102.1
B 4 173 16423 155.93 524 510 102.1
C 3 233 84301 696.74 501 505 120.3
C 14 238 76312 630.31 501 505 120.3
C 7 247 47957 394.55 501 505 120.3
D 10 40 28300 220.2 510 494 126.3
D 2 234 15019 115.02 510 494 126.3
D 12 17 11669 88.5 510 494 126.3

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