ASTROSAT CZTI

Data Quality Report

Orbit 12508

Creation date: 2024-06-27T16:28:25.175397
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/AS1T01_218T01_9000001852_12508cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12508cztM0_level2_quad_clean.evt
Size (bytes)485,786,88099,011,520
Size463.3 MB 94.4 MB
Events in quadrant A3,411,458629,195
Events in quadrant B3,733,069642,754
Events in quadrant C3,200,301631,110
Events in quadrant D3,883,756599,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147293
B0157442
C0145502
D0165092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71091061.491068%
B71091432.011535%
C7109440.618934%
D71091361.913068%

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 7900 7111 0 0 0.00% 0.00%
B 7900 7111 14 14 0.18% 0.20%
C 7900 7111 0 0 0.00% 0.00%
D 7900 7111 86 86 1.09% 1.21%

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 12 189 45558 259.88 851 834 172.1
A 1 162 36801 208.99 851 834 172.1
A 1 178 20870 116.42 851 834 172.1
B 4 239 311501 1907.99 850 828 162.8
B 0 214 36524 219.23 850 828 162.8
B 3 64 33679 201.75 850 828 162.8
C 3 233 8292 39.26 818 822 190.3
C 13 61 6168 28.09 818 822 190.3
C 14 234 2844 10.63 818 822 190.3
D 1 52 461076 2373.02 814 789 194.0
D 1 255 132228 677.64 814 789 194.0
D 13 104 104776 536.11 814 789 194.0

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