ASTROSAT CZTI

Data Quality Report

Orbit 48406

Creation date: 2024-09-09T19:30:00.906721
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/AS1A13_029T01_9000006426_48406cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48406cztM0_level2_quad_clean.evt
Size (bytes)628,038,720112,173,120
Size598.9 MB 107.0 MB
Events in quadrant A8,313,038721,406
Events in quadrant B5,411,253739,517
Events in quadrant C3,422,262770,847
Events in quadrant D5,529,214651,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303452
B0210762
C0156792
D0216112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73827259.821187%
B738180210.865736%
C73811381.869665%
D73817149.673486%

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 8037 7383 211 211 2.63% 2.86%
B 8036 7382 414 414 5.15% 5.61%
C 8036 7382 17 17 0.21% 0.23%
D 8036 7382 507 507 6.31% 6.87%

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 4456941 25954.41 819 801 171.7
A 13 248 685263 3986.59 819 801 171.7
A 13 254 14395 79.17 819 801 171.7
B 12 16 2053298 12537.0 815 788 163.7
B 8 234 32840 195.78 815 788 163.7
B 0 197 25750 152.47 815 788 163.7
C 14 254 88789 446.17 832 835 197.1
C 15 208 75060 376.52 832 835 197.1
C 1 3 9108 41.97 832 835 197.1
D 2 165 2017976 9817.73 815 790 205.5
D 2 249 138022 667.91 815 790 205.5
D 5 32 85555 412.56 815 790 205.5

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