ASTROSAT CZTI

Data Quality Report

Orbit 26348

Creation date: 2024-06-27T19:27:44.982161
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_038T02_9000003798_26348cztM0_level2.evt modeM0/AS1A09_038T02_9000003798_26348cztM0_level2_quad_clean.evt
Size (bytes)386,150,40094,253,760
Size368.3 MB 89.9 MB
Events in quadrant A2,232,591634,177
Events in quadrant B2,283,514649,342
Events in quadrant C4,231,996599,264
Events in quadrant D2,608,296623,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100340
B0100780
C0158180
D0110180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4973250.502715%
B4973360.723909%
C497360712.205912%
D4973420.844561%

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 4973 4973 0 0 0.00% 0.00%
B 4973 4973 0 0 0.00% 0.00%
C 4973 4973 361 361 7.26% 7.26%
D 4973 4973 11 11 0.22% 0.22%

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 13 254 7323 57.64 578 564 117.3
A 3 137 5482 41.94 578 564 117.3
A 0 226 4909 37.05 578 564 117.3
B 12 111 13241 114.37 579 562 110.9
B 11 111 12178 104.78 579 562 110.9
B 14 111 10693 91.38 579 562 110.9
C 3 233 1954493 15541.01 542 544 125.7
C 14 238 87321 690.19 542 544 125.7
C 0 239 57829 455.62 542 544 125.7
D 1 52 395987 2923.14 567 553 135.3
D 11 176 21647 155.93 567 553 135.3
D 2 234 20850 150.04 567 553 135.3

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