ASTROSAT CZTI

Data Quality Report

Orbit 37726

Creation date: 2024-06-27T21:43:40.113705
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/AS1A11_106T02_9000005344_37726cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37726cztM0_level2_quad_clean.evt
Size (bytes)687,165,12066,401,280
Size655.3 MB 63.3 MB
Events in quadrant A9,541,504376,303
Events in quadrant B3,580,806428,343
Events in quadrant C2,710,186443,037
Events in quadrant D4,632,028402,628

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319183
B0141242
C0111422
D0172812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5132259450.545596%
B51322875.592362%
C5132601.169135%
D51324598.943882%

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 7076 5133 2721 2721 38.45% 53.01%
B 7075 5131 203 203 2.87% 3.96%
C 7075 5131 48 48 0.68% 0.94%
D 7075 5131 463 463 6.54% 9.02%

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 15 222 7158994 68165.25 515 505 105.0
A 10 83 295029 2804.54 515 505 105.0
A 9 143 33433 313.55 515 505 105.0
B 4 171 814357 7471.95 570 553 108.9
B 5 172 152397 1394.16 570 553 108.9
B 4 232 61987 564.06 570 553 108.9
C 15 214 217065 1628.4 574 580 132.9
C 0 10 190034 1425.07 574 580 132.9
C 15 208 36356 269.11 574 580 132.9
D 12 227 777475 5764.56 555 540 134.8
D 2 249 582620 4318.81 555 540 134.8
D 1 47 387932 2874.3 555 540 134.8

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