ASTROSAT CZTI

Data Quality Report

Orbit 25936

Creation date: 2024-06-27T19:23:00.333552
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/AS1T03_214T01_9000003758_25936cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25936cztM0_level2_quad_clean.evt
Size (bytes)802,598,40081,984,960
Size765.4 MB 78.2 MB
Events in quadrant A12,729,791322,368
Events in quadrant B3,384,181588,026
Events in quadrant C3,506,984565,739
Events in quadrant D4,245,679551,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423800
B0141330
C0147220
D0168890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6511402761.849178%
B6511931.428352%
C65111702.610966%
D65112403.686070%

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 7625 6510 3532 3532 46.32% 54.25%
B 7626 6511 1 1 0.01% 0.02%
C 7626 6512 10 10 0.13% 0.15%
D 7626 6511 135 135 1.77% 2.07%

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 0 13 10574155 96379.84 552 543 109.7
A 12 16 23072 205.35 552 543 109.7
A 12 194 7490 63.32 552 543 109.7
B 0 229 24265 147.43 852 830 159.0
B 12 111 19256 115.92 852 830 159.0
B 11 111 17125 102.51 852 830 159.0
C 14 238 134243 700.68 828 834 190.4
C 2 16 101473 528.57 828 834 190.4
C 3 233 47219 243.62 828 834 190.4
D 1 52 933428 4802.97 833 814 194.2
D 7 80 136558 699.08 833 814 194.2
D 12 233 24567 122.33 833 814 194.2

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