ASTROSAT CZTI

Data Quality Report

Orbit 40665

Creation date: 2024-06-27T22:18:53.134472
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_029T02_9000005558_40665cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40665cztM0_level2_quad_clean.evt
Size (bytes)324,990,72085,584,960
Size309.9 MB 81.6 MB
Events in quadrant A2,840,488591,327
Events in quadrant B2,684,439611,485
Events in quadrant C2,517,316579,555
Events in quadrant D3,580,841443,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113823
B0114132
C0107202
D0142692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521490.172612%
B5214250.479478%
C5214190.364404%
D521493417.913310%

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 7307 5215 5 5 0.07% 0.10%
B 7307 5215 9 9 0.12% 0.17%
C 7307 5215 15 15 0.21% 0.29%
D 7307 5215 270 270 3.70% 5.18%

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 491502 4127.45 584 572 118.9
A 15 191 32234 266.2 584 572 118.9
A 12 189 25590 210.34 584 572 118.9
B 0 229 242692 2187.7 576 560 110.7
B 0 190 64479 577.52 576 560 110.7
B 0 230 47004 419.63 576 560 110.7
C 15 214 227675 1722.06 561 566 131.9
C 14 254 57124 428.85 561 566 131.9
C 12 251 15794 115.47 561 566 131.9
D 2 153 467097 3714.12 508 493 125.6
D 12 227 461637 3670.66 508 493 125.6
D 13 249 191596 1521.16 508 493 125.6

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