ASTROSAT CZTI

Data Quality Report

Orbit 28539

Creation date: 2024-06-27T19:53:02.550560
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/AS1A10_058T09_9000004100_28539cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28539cztM0_level2_quad_clean.evt
Size (bytes)582,192,00080,421,120
Size555.2 MB 76.7 MB
Events in quadrant A4,194,830500,206
Events in quadrant B4,178,977505,480
Events in quadrant C3,226,267494,423
Events in quadrant D5,584,331474,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166231
B0167251
C0137191
D0211821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66011352.045145%
B66024837.315965%
C66021251.893366%
D66023795.740685%

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 7466 6601 30 30 0.40% 0.45%
B 7467 6602 251 251 3.36% 3.80%
C 7467 6602 0 0 0.00% 0.00%
D 7467 6602 268 268 3.59% 4.06%

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 15 174 986224 5938.29 818 798 165.9
A 1 113 42234 249.7 818 798 165.9
A 13 254 12408 69.96 818 798 165.9
B 10 245 1031526 6696.2 795 776 153.9
B 12 111 19078 118.9 795 776 153.9
B 11 111 17631 109.5 795 776 153.9
C 14 238 127819 687.41 783 786 184.8
C 7 247 42542 225.95 783 786 184.8
C 3 233 7680 37.3 783 786 184.8
D 1 52 2078520 11102.39 781 758 187.1
D 8 195 462668 2468.19 781 758 187.1
D 13 104 30790 160.47 781 758 187.1

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