ASTROSAT CZTI

Data Quality Report

Orbit 25159

Creation date: 2024-06-27T19:14:42.411401
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/AS1A07_018T09_9000003682_25159cztM0_level2.evt modeM0/AS1A07_018T09_9000003682_25159cztM0_level2_quad_clean.evt
Size (bytes)259,168,32035,933,760
Size247.2 MB 34.3 MB
Events in quadrant A1,301,151247,599
Events in quadrant B1,343,499254,202
Events in quadrant C1,924,505232,449
Events in quadrant D3,115,604180,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053780
B054870
C073300
D0109440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2399512.125886%
B2399642.667778%
C239931213.005419%
D239963426.427678%

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 3724 2400 0 0 0.00% 0.00%
B 3724 2399 0 0 0.00% 0.00%
C 3724 2399 129 129 3.46% 5.38%
D 3724 2400 605 605 16.25% 25.21%

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 3999 53.1 337 330 69.1
A 3 137 3057 39.46 337 330 69.1
A 0 226 2810 35.89 337 330 69.1
B 0 189 9155 134.06 338 330 65.8
B 0 229 8952 130.98 338 330 65.8
B 12 111 7581 110.15 338 330 65.8
C 9 54 571228 7303.59 327 329 78.2
C 14 238 51428 653.72 327 329 78.2
C 7 247 20937 263.64 327 329 78.2
D 1 52 1930775 27049.06 289 281 71.4
D 8 195 62475 871.43 289 281 71.4
D 12 235 24497 339.3 289 281 71.4

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