ASTROSAT CZTI

Data Quality Report

Orbit 24993

Creation date: 2024-06-27T19:12:27.847474
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_127T03_9000003662_24993cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_24993cztM0_level2_quad_clean.evt
Size (bytes)461,039,04066,663,360
Size439.7 MB 63.6 MB
Events in quadrant A3,249,845399,592
Events in quadrant B3,441,120402,270
Events in quadrant C3,332,030381,813
Events in quadrant D3,497,431380,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137964
B0143852
C0138362
D0146672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504580.891759%
B6504861.322263%
C65041071.645141%
D6504600.922509%

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 7529 6505 0 0 0.00% 0.00%
B 7529 6505 8 8 0.11% 0.12%
C 7529 6505 5 5 0.07% 0.08%
D 7529 6505 15 15 0.20% 0.23%

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 6 16 11631 63.97 839 822 169.0
A 13 254 10686 58.38 839 822 169.0
A 3 137 7446 39.2 839 822 169.0
B 10 246 47984 296.51 832 811 159.1
B 5 172 41295 254.47 832 811 159.1
B 3 64 20100 121.24 832 811 159.1
C 14 238 126474 669.1 795 800 187.8
C 7 247 62271 327.28 795 800 187.8
C 0 10 43619 227.97 795 800 187.8
D 12 153 174833 884.21 813 791 196.8
D 8 195 136165 687.76 813 791 196.8
D 1 52 74858 376.29 813 791 196.8

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