ASTROSAT CZTI

Data Quality Report

Orbit 37911

Creation date: 2024-06-27T21:46:03.091840
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/AS1T05_059T01_9000005354_37911cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37911cztM0_level2_quad_clean.evt
Size (bytes)490,063,68099,455,040
Size467.4 MB 94.8 MB
Events in quadrant A3,120,624685,374
Events in quadrant B3,635,739664,958
Events in quadrant C2,866,557692,415
Events in quadrant D4,874,513613,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123873
B0138312
C0115772
D0179192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5075220.433498%
B50753597.073892%
C5075280.551724%
D507568113.418719%

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 7108 5076 9 9 0.13% 0.18%
B 7108 5075 280 280 3.94% 5.52%
C 7108 5076 13 13 0.18% 0.26%
D 7108 5073 460 460 6.47% 9.07%

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 344887 2670.48 649 640 128.9
A 12 227 130172 1004.84 649 640 128.9
A 15 222 88739 683.42 649 640 128.9
B 5 172 934282 8100.33 617 603 115.3
B 4 81 93701 807.69 617 603 115.3
B 0 230 75524 649.99 617 603 115.3
C 15 214 216666 1504.48 628 634 143.6
C 0 10 114940 796.05 628 634 143.6
C 14 254 51841 356.61 628 634 143.6
D 1 52 1660272 11339.45 601 588 146.4
D 12 233 546900 3732.57 601 588 146.4
D 1 47 109533 744.34 601 588 146.4

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