ASTROSAT CZTI

Data Quality Report

Orbit 39587

Creation date: 2024-06-27T22:06:30.288492
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_9000005488_39587cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39587cztM0_level2_quad_clean.evt
Size (bytes)447,569,28088,920,000
Size426.8 MB 84.8 MB
Events in quadrant A5,412,230567,886
Events in quadrant B2,621,852636,063
Events in quadrant C5,308,065548,381
Events in quadrant D2,801,102557,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198343
B0116772
C0195512
D0118582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546258610.728671%
B5462520.952032%
C546260411.058220%
D5462390.714024%

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 7165 5463 550 550 7.68% 10.07%
B 7165 5463 27 27 0.38% 0.49%
C 7165 5463 551 551 7.69% 10.09%
D 7165 5463 24 24 0.33% 0.44%

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 1973073 16486.27 585 574 119.6
A 9 143 518083 4325.37 585 574 119.6
A 10 83 443233 3699.77 585 574 119.6
B 5 172 254103 2187.61 595 578 115.9
B 5 255 26774 226.04 595 578 115.9
B 12 111 14174 117.32 595 578 115.9
C 9 187 1637270 12405.28 568 570 131.9
C 15 208 1195047 9053.47 568 570 131.9
C 15 214 235851 1783.3 568 570 131.9
D 13 174 153286 1063.35 589 572 143.6
D 1 52 147581 1023.63 589 572 143.6
D 13 249 145464 1008.89 589 572 143.6

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