ASTROSAT CZTI

Data Quality Report

Orbit 01336

Creation date: 2024-06-27T14:11:09.671181
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/AS1G04_002T02_9000000230_01336cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01336cztM0_level2_quad_clean.evt
Size (bytes)1,179,504,000102,335,040
Size1.1 GB 97.6 MB
Events in quadrant A8,816,358662,233
Events in quadrant B9,273,681666,829
Events in quadrant C8,667,520650,331
Events in quadrant D8,503,809635,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311132
B0324751
C0306741
D0302101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6954540.776531%
B6954200.287604%
C6954130.186943%
D69541482.128271%

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 6969 6955 433 433 6.21% 6.23%
B 6969 6955 451 451 6.47% 6.48%
C 6969 6955 415 415 5.95% 5.97%
D 6969 6955 597 597 8.57% 8.58%

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 4 32 235831 439.73 2177 2190 531.3
A 15 127 158914 294.97 2177 2190 531.3
A 14 5 61774 112.14 2177 2190 531.3
B 8 4 509574 950.07 2243 2252 534.0
B 12 52 97184 177.78 2243 2252 534.0
B 6 53 65717 118.85 2243 2252 534.0
C 3 9 433870 771.37 2002 2068 559.8
C 15 241 334373 593.63 2002 2068 559.8
C 3 79 33252 55.71 2002 2068 559.8
D 10 84 962999 1572.96 1966 2029 610.9
D 1 83 110558 177.64 1966 2029 610.9
D 13 252 41010 63.81 1966 2029 610.9

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