ASTROSAT CZTI

Data Quality Report

Orbit 41638

Creation date: 2024-06-27T22:30:59.787361
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_035T02_9000005680_41638cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41638cztM0_level2_quad_clean.evt
Size (bytes)553,841,28092,908,800
Size528.2 MB 88.6 MB
Events in quadrant A3,222,934671,117
Events in quadrant B3,559,027662,574
Events in quadrant C3,472,233629,881
Events in quadrant D9,782,047430,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132292
B0146702
C0139282
D0332173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5992150.250334%
B59922163.604806%
C59922133.554740%
D5992200533.461282%

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 9279 5994 11 11 0.12% 0.18%
B 9279 5994 127 127 1.37% 2.12%
C 9279 5994 204 204 2.20% 3.40%
D 9279 5992 2021 2021 21.78% 33.73%

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 564930 4167.63 663 647 135.4
A 13 248 86160 631.57 663 647 135.4
A 13 254 10620 73.65 663 647 135.4
B 4 171 477118 3798.88 651 631 125.4
B 0 186 363593 2893.78 651 631 125.4
B 5 255 101798 806.57 651 631 125.4
C 0 10 543362 3622.72 638 640 149.8
C 15 214 239986 1597.66 638 640 149.8
C 14 254 178012 1183.97 638 640 149.8
D 12 79 5618355 39933.86 576 559 140.7
D 13 249 994104 7062.57 576 559 140.7
D 2 249 562709 3996.02 576 559 140.7

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