ASTROSAT CZTI

Data Quality Report

Orbit 11324

Creation date: 2024-06-27T16:11:19.524009
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/AS1G08_028T01_9000001656_11324cztM0_level2.evt modeM0/AS1G08_028T01_9000001656_11324cztM0_level2_quad_clean.evt
Size (bytes)904,495,68073,704,960
Size862.6 MB 70.3 MB
Events in quadrant A8,152,552393,670
Events in quadrant B4,659,364472,135
Events in quadrant C8,057,730420,171
Events in quadrant D6,025,047431,188

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290192
B0185481
C0288141
D0227911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7383208628.254097%
B73834676.325342%
C7383199927.075714%
D738382011.106596%

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 7648 7384 1372 1372 17.94% 18.58%
B 7648 7384 188 188 2.46% 2.55%
C 7648 7384 1707 1707 22.32% 23.12%
D 7648 7383 591 591 7.73% 8.00%

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 14 238 5096029 32711.71 745 728 155.8
A 8 15 84692 539.05 745 728 155.8
A 15 174 35861 225.55 745 728 155.8
B 4 239 902962 5377.67 866 845 167.8
B 3 64 225449 1338.9 866 845 167.8
B 15 204 60242 354.08 866 845 167.8
C 9 204 5036486 27973.87 771 775 180.0
C 8 128 6353 30.99 771 775 180.0
C 13 61 5697 27.34 771 775 180.0
D 10 253 969177 4911.36 801 776 197.2
D 1 52 958889 4859.19 801 776 197.2
D 2 120 379283 1919.64 801 776 197.2

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