ASTROSAT CZTI

Data Quality Report

Orbit 16035

Creation date: 2024-06-27T17:17:04.583393
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/AS1G08_012T01_9000002370_16035cztM0_level2.evt modeM0/AS1G08_012T01_9000002370_16035cztM0_level2_quad_clean.evt
Size (bytes)466,286,40064,990,080
Size444.7 MB 62.0 MB
Events in quadrant A3,339,473383,356
Events in quadrant B3,413,182388,356
Events in quadrant C3,482,067371,405
Events in quadrant D3,444,964370,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140683
B0142392
C0141312
D0145042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6507821.260181%
B6507851.306286%
C6507971.490702%
D6507781.198709%

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 7668 6508 0 0 0.00% 0.00%
B 7668 6508 0 0 0.00% 0.00%
C 7668 6508 0 0 0.00% 0.00%
D 7668 6508 25 25 0.33% 0.38%

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 9 143 11393 61.12 864 849 172.5
A 0 226 7571 38.96 864 849 172.5
A 12 194 6305 31.63 864 849 172.5
B 0 230 33432 200.04 855 835 163.0
B 0 229 26322 156.41 855 835 163.0
B 12 111 18835 110.46 855 835 163.0
C 3 233 153474 805.96 820 826 189.4
C 14 238 127259 667.55 820 826 189.4
C 13 61 5869 26.63 820 826 189.4
D 13 172 172287 844.18 841 818 203.1
D 2 33 47579 230.22 841 818 203.1
D 2 234 21147 100.08 841 818 203.1

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