ASTROSAT CZTI

Data Quality Report

Orbit 15966

Creation date: 2024-06-27T17:15:48.316114
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/AS1T02_087T01_9000002352_15966cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15966cztM0_level2_quad_clean.evt
Size (bytes)453,170,88091,468,800
Size432.2 MB 87.2 MB
Events in quadrant A3,217,740596,745
Events in quadrant B3,658,859608,966
Events in quadrant C3,281,465573,004
Events in quadrant D3,140,355553,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135333
B0149142
C0136492
D0134682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274731.163532%
B6274901.434492%
C62741302.072043%
D6274360.573797%

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 7585 6276 13 13 0.17% 0.21%
B 7585 6276 7 7 0.09% 0.11%
C 7585 6276 23 23 0.30% 0.37%
D 7585 6276 4 4 0.05% 0.06%

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 85869 517.18 808 793 164.5
A 13 248 12103 68.75 808 793 164.5
A 13 210 9299 51.71 808 793 164.5
B 4 216 101856 654.46 816 798 154.4
B 5 65 62518 399.7 816 798 154.4
B 10 245 60692 387.88 816 798 154.4
C 9 236 139156 766.81 767 772 180.5
C 14 238 119318 656.88 767 772 180.5
C 3 233 24350 130.65 767 772 180.5
D 12 110 113852 588.53 775 752 192.2
D 2 152 28528 144.53 775 752 192.2
D 2 234 21289 106.87 775 752 192.2

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