ASTROSAT CZTI

Data Quality Report

Orbit 41526

Creation date: 2024-06-27T22:30:04.440074
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/AS1A12_035T02_9000005676_41526cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41526cztM0_level2_quad_clean.evt
Size (bytes)839,784,960228,502,080
Size800.9 MB 217.9 MB
Events in quadrant A7,547,7341,532,155
Events in quadrant B7,304,1321,547,231
Events in quadrant C7,316,4291,477,241
Events in quadrant D7,808,9741,374,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305924
B0315763
C0307333
D0335613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14300260.181818%
B143002001.398601%
C143002381.664336%
D143003322.321678%

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 18417 14303 7 7 0.04% 0.05%
B 18417 14303 162 162 0.88% 1.13%
C 18417 14303 235 235 1.28% 1.64%
D 18417 14303 364 364 1.98% 2.54%

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 10 83 1182624 3663.34 1578 1545 322.4
A 14 235 222340 684.84 1578 1545 322.4
A 13 254 25938 75.66 1578 1545 322.4
B 0 186 602821 2016.04 1548 1506 298.3
B 5 255 205504 683.95 1548 1506 298.3
B 0 245 174421 579.74 1548 1506 298.3
C 0 10 665541 1884.01 1519 1525 352.4
C 15 214 573632 1623.23 1519 1525 352.4
C 14 254 55779 153.93 1519 1525 352.4
D 12 128 691889 1844.84 1528 1483 374.2
D 13 249 512959 1366.72 1528 1483 374.2
D 1 47 146368 387.15 1528 1483 374.2

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