ASTROSAT CZTI

Data Quality Report

Orbit 48107

Creation date: 2024-08-20T17:25:41.060022
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/AS1A13_071T03_9000006400_48107cztM0_level2.fits modeM0/AS1A13_071T03_9000006400_48107cztM0_level2_quad_clean.evt
Size (bytes)1,224,000,000229,792,320
Size1.1 GB 219.1 MB
Events in quadrant A19,820,4951,929,785
Events in quadrant B3,335,393317
Events in quadrant C8,615,3481,966,394
Events in quadrant D12,012,3131,723,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0741323
B0206283
C0403763
D0497723

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194158134.187484%
B194151941099.974247%
C194163451.776885%
D1941510275.289724%

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 20460 19415 51 51 0.25% 0.26%
B 20459 19414 0 0 0.00% 0.00%
C 20461 19418 16 16 0.08% 0.08%
D 20460 19416 683 683 3.34% 3.52%

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 10 83 10881007 24407.07 2143 2095 445.7
A 14 248 449229 1003.15 2143 2095 445.7
A 3 7 115874 255.27 2143 2095 445.7
B 2 177 2679975 87708.93 140 136 30.6
B 4 21 55451 1810.41 140 136 30.6
B 0 200 13979 453.07 140 136 30.6
C 14 254 78825 150.82 2149 2155 508.4
C 10 20 65512 124.63 2149 2155 508.4
C 12 250 50617 95.33 2149 2155 508.4
D 12 2 2624092 4983.05 2103 2035 526.2
D 2 37 451532 854.24 2103 2035 526.2
D 11 224 252982 476.91 2103 2035 526.2

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