ASTROSAT CZTI

Data Quality Report

Orbit 46705

Creation date: 2024-06-27T23:26:39.940823
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_037T01_9000006256_46705cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46705cztM0_level2_quad_clean.evt
Size (bytes)428,938,560102,015,360
Size409.1 MB 97.3 MB
Events in quadrant A6,038,378670,841
Events in quadrant B3,163,079706,322
Events in quadrant C2,790,969673,060
Events in quadrant D3,419,840619,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218881
B0135911
C0125021
D0143491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59982293.817939%
B5998711.183728%
C5999350.583431%
D5999771.283547%

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 7198 5999 68 68 0.94% 1.13%
B 7198 5999 8 8 0.11% 0.13%
C 7199 6000 3 3 0.04% 0.05%
D 7199 5999 34 34 0.47% 0.57%

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 3235123 22792.31 683 669 141.9
A 15 254 70978 495.45 683 669 141.9
A 9 191 45186 313.7 683 669 141.9
B 4 171 180724 1328.58 691 672 135.5
B 0 190 56069 408.77 691 672 135.5
B 0 198 37728 273.43 691 672 135.5
C 14 254 96501 594.2 682 685 161.3
C 12 249 6543 36.33 682 685 161.3
C 1 3 5832 31.92 682 685 161.3
D 1 52 430806 2500.23 681 660 172.0
D 13 249 78953 455.08 681 660 172.0
D 5 171 39069 223.25 681 660 172.0

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