ASTROSAT CZTI

Data Quality Report

Orbit 12472

Creation date: 2024-06-27T16:27:52.825738
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_12472cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12472cztM0_level2_quad_clean.evt
Size (bytes)679,668,48087,891,840
Size648.2 MB 83.8 MB
Events in quadrant A8,884,946511,710
Events in quadrant B3,504,313592,178
Events in quadrant C2,902,246585,260
Events in quadrant D4,869,245534,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308532
B0143451
C0128171
D0186271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6252168326.919386%
B62521231.967370%
C6252370.591811%
D62523455.518234%

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 7327 6252 1083 1083 14.78% 17.32%
B 7328 6253 50 50 0.68% 0.80%
C 7328 6253 0 0 0.00% 0.00%
D 7328 6253 248 248 3.38% 3.97%

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 13 251 4833965 33417.69 706 693 144.6
A 0 23 1004655 6941.49 706 693 144.6
A 12 189 103205 708.78 706 693 144.6
B 4 239 266019 1838.85 762 746 144.3
B 3 64 118360 815.29 762 746 144.3
B 11 51 39985 272.0 762 746 144.3
C 13 61 5546 27.86 744 751 172.1
C 14 67 2414 9.66 744 751 172.1
C 8 222 1813 6.17 744 751 172.1
D 1 52 1969638 11221.63 726 708 175.5
D 7 71 73507 414.91 726 708 175.5
D 2 234 27080 150.3 726 708 175.5

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