ASTROSAT CZTI

Data Quality Report

Orbit 12450

Creation date: 2024-06-27T16:27:33.937046
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/AS1A04_174T01_9000001850_12450cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12450cztM0_level2_quad_clean.evt
Size (bytes)574,243,20066,101,760
Size547.6 MB 63.0 MB
Events in quadrant A5,390,064407,931
Events in quadrant B4,265,089364,066
Events in quadrant C3,067,989413,402
Events in quadrant D4,223,447358,099

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208992
B0168141
C0134301
D0170241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556881.342282%
B65565518.404515%
C6556110.167785%
D65564717.184259%

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 7472 6558 12 12 0.16% 0.18%
B 7472 6558 336 336 4.50% 5.12%
C 7472 6558 1 1 0.01% 0.02%
D 7472 6558 395 395 5.29% 6.02%

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 0 23 1007815 6184.72 792 778 162.8
A 13 251 615578 3775.8 792 778 162.8
A 1 162 232507 1423.16 792 778 162.8
B 4 239 1126242 7691.92 762 746 146.3
B 11 51 68995 466.43 762 746 146.3
B 0 187 60624 409.22 762 746 146.3
C 15 208 33897 183.09 778 785 180.9
C 13 61 5716 27.27 778 785 180.9
C 3 202 1922 6.29 778 785 180.9
D 1 52 1176658 6650.21 738 720 176.8
D 13 104 151260 851.34 738 720 176.8
D 5 184 56098 313.17 738 720 176.8

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