ASTROSAT CZTI

Data Quality Report

Orbit 32858

Creation date: 2024-06-27T20:42:43.053011
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/AS1A11_005T04_9000004742_32858cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32858cztM0_level2_quad_clean.evt
Size (bytes)476,205,12070,534,080
Size454.1 MB 67.3 MB
Events in quadrant A2,494,555458,155
Events in quadrant B3,282,115459,557
Events in quadrant C2,750,270463,975
Events in quadrant D5,556,751404,047

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103743
B0128212
C0111342
D0199142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4987250.501303%
B49872745.494285%
C4987450.902346%
D498751210.266693%

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 7049 4988 17 17 0.24% 0.34%
B 7049 4988 178 178 2.53% 3.57%
C 7049 4988 38 38 0.54% 0.76%
D 7049 4988 618 618 8.77% 12.39%

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 87564 712.23 621 612 122.1
A 13 254 9119 69.68 621 612 122.1
A 13 6 7098 53.13 621 612 122.1
B 5 172 753373 6566.62 617 603 114.6
B 0 197 28496 243.31 617 603 114.6
B 0 230 27226 232.24 617 603 114.6
C 3 233 155634 1108.61 609 615 139.8
C 0 10 139823 995.54 609 615 139.8
C 1 23 30947 216.92 609 615 139.8
D 8 195 1245697 8505.2 580 568 146.4
D 12 227 1088958 7434.55 580 568 146.4
D 12 79 408219 2784.57 580 568 146.4

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