ASTROSAT CZTI

Data Quality Report

Orbit 38485

Creation date: 2024-06-27T21:53:23.850613
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/AS1A12_018T01_9000005386_38485cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38485cztM0_level2_quad_clean.evt
Size (bytes)462,015,360105,909,120
Size440.6 MB 101.0 MB
Events in quadrant A5,794,161674,691
Events in quadrant B3,783,153741,385
Events in quadrant C3,079,665708,970
Events in quadrant D3,942,076629,477

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215533
B0155422
C0131772
D0163222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64805668.734568%
B6480651.003086%
C648050.077160%
D64802894.459877%

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 9407 6481 469 469 4.99% 7.24%
B 9407 6482 28 28 0.30% 0.43%
C 9407 6482 0 0 0.00% 0.00%
D 9407 6482 234 234 2.49% 3.61%

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 2563930 17976.87 697 682 142.6
A 10 83 431687 3022.77 697 682 142.6
A 12 189 61119 423.86 697 682 142.6
B 4 171 746709 5290.58 730 711 141.0
B 8 3 61403 430.42 730 711 141.0
B 0 155 33354 231.5 730 711 141.0
C 15 214 268045 1591.36 718 721 168.0
C 0 10 10707 59.45 718 721 168.0
C 13 61 4551 22.8 718 721 168.0
D 10 118 527602 3075.86 705 685 171.3
D 2 250 173815 1010.64 705 685 171.3
D 13 249 158675 922.26 705 685 171.3

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