ASTROSAT CZTI

Data Quality Report

Orbit 33831

Creation date: 2024-06-27T20:53:10.383830
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_106T03_9000004826_33831cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33831cztM0_level2_quad_clean.evt
Size (bytes)448,850,88087,209,280
Size428.1 MB 83.2 MB
Events in quadrant A2,383,483583,040
Events in quadrant B3,316,149577,334
Events in quadrant C3,254,245577,697
Events in quadrant D4,296,868548,650

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102713
B0130682
C0128602
D0163082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505780.158197%
B50572565.062290%
C5057981.937908%
D50571703.361677%

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 7029 5058 0 0 0.00% 0.00%
B 7029 5058 175 175 2.49% 3.46%
C 7029 5058 78 78 1.11% 1.54%
D 7029 5058 145 145 2.06% 2.87%

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 6 27486 222.49 605 595 120.9
A 10 83 11330 88.82 605 595 120.9
A 13 254 9126 70.58 605 595 120.9
B 5 172 760178 6734.02 595 582 112.8
B 0 229 149250 1317.98 595 582 112.8
B 0 190 16465 140.81 595 582 112.8
C 3 233 326036 2407.72 589 595 135.2
C 15 214 218427 1611.59 589 595 135.2
C 0 10 173083 1276.12 589 595 135.2
D 8 195 1048216 6644.33 580 568 157.7
D 12 235 240560 1522.06 580 568 157.7
D 2 250 229922 1454.59 580 568 157.7

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