ASTROSAT CZTI

Data Quality Report

Orbit 15835

Creation date: 2024-06-27T17:14:10.123236
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/AS1A04_143T01_9000002344_15835cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15835cztM0_level2_quad_clean.evt
Size (bytes)450,498,240101,093,760
Size429.6 MB 96.4 MB
Events in quadrant A3,615,220657,665
Events in quadrant B3,348,622688,861
Events in quadrant C3,154,052656,246
Events in quadrant D3,112,746634,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146433
B0136952
C0130232
D0131092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60771131.859470%
B6077731.201251%
C6077500.822774%
D6077120.197466%

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 7428 6079 44 44 0.59% 0.72%
B 7428 6079 1 1 0.01% 0.02%
C 7428 6079 1 1 0.01% 0.02%
D 7428 6079 8 8 0.11% 0.13%

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 409336 2618.67 776 761 156.0
A 14 239 209673 1338.98 776 761 156.0
A 0 226 6845 38.99 776 761 156.0
B 5 65 126326 844.49 792 775 148.7
B 10 245 46800 309.57 792 775 148.7
B 4 173 25523 166.46 792 775 148.7
C 14 238 116191 652.59 761 769 176.9
C 3 233 26392 144.87 761 769 176.9
C 0 207 16832 90.82 761 769 176.9
D 1 52 149175 800.83 763 744 185.3
D 7 223 70241 374.96 763 744 185.3
D 2 234 23421 122.35 763 744 185.3

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