ASTROSAT CZTI

Data Quality Report

Orbit 19369

Creation date: 2024-06-27T18:02:08.412153
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/AS1A05_227T03_9000002862_19369cztM0_level2.evt modeM0/AS1A05_227T03_9000002862_19369cztM0_level2_quad_clean.evt
Size (bytes)254,727,36035,429,760
Size242.9 MB 33.8 MB
Events in quadrant A1,305,526232,822
Events in quadrant B1,453,085236,573
Events in quadrant C1,327,732225,840
Events in quadrant D3,452,839193,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054121
B058491
C055271
D0120683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2560371.445312%
B2560712.773438%
C2560562.187500%
D255973228.604924%

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 3575 2560 0 0 0.00% 0.00%
B 3575 2561 14 14 0.39% 0.55%
C 3575 2560 0 0 0.00% 0.00%
D 3574 2559 258 258 7.22% 10.08%

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 5 16 4080 53.9 337 329 69.6
A 0 226 2933 37.42 337 329 69.6
A 3 137 2579 32.33 337 329 69.6
B 6 36 48432 728.56 335 326 66.0
B 4 216 36200 543.31 335 326 66.0
B 15 32 21254 316.95 335 326 66.0
C 14 238 49867 655.91 319 321 75.5
C 3 233 29915 391.78 319 321 75.5
C 13 61 2230 25.27 319 321 75.5
D 10 66 1297120 18145.0 289 281 71.5
D 1 52 489760 6848.65 289 281 71.5
D 7 238 375212 5245.93 289 281 71.5

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