ASTROSAT CZTI

Data Quality Report

Orbit 46298

Creation date: 2024-06-27T23:21:25.130966
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_072T02_9000006194_46298cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46298cztM0_level2_quad_clean.evt
Size (bytes)488,448,000109,713,600
Size465.8 MB 104.6 MB
Events in quadrant A6,250,601729,953
Events in quadrant B4,630,674722,668
Events in quadrant C3,327,791727,023
Events in quadrant D3,346,727671,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228604
B0182022
C0146102
D0148742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67573324.913423%
B67585758.508434%
C67581782.633915%
D67581562.308375%

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 8667 6759 12 12 0.14% 0.18%
B 8668 6760 256 256 2.95% 3.79%
C 8668 6760 47 47 0.54% 0.70%
D 8668 6760 27 27 0.31% 0.40%

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 2914164 17513.49 798 781 166.4
A 15 223 195891 1172.88 798 781 166.4
A 10 255 41973 247.62 798 781 166.4
B 4 171 1026958 6697.28 772 746 153.2
B 3 112 515925 3362.17 772 746 153.2
B 12 111 20198 126.95 772 746 153.2
C 1 3 139395 751.29 784 788 184.5
C 12 2 81675 438.43 784 788 184.5
C 11 16 40619 215.9 784 788 184.5
D 13 249 240041 1208.4 787 762 198.0
D 2 249 49422 245.74 787 762 198.0
D 1 52 26820 131.6 787 762 198.0

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