ASTROSAT CZTI

Data Quality Report

Orbit 38935

Creation date: 2024-06-27T21:58:21.651862
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/AS1T05_064T01_9000005416_38935cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38935cztM0_level2_quad_clean.evt
Size (bytes)392,287,68091,581,120
Size374.1 MB 87.3 MB
Events in quadrant A2,870,198621,272
Events in quadrant B2,565,575632,951
Events in quadrant C2,550,054602,675
Events in quadrant D6,110,491533,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119502
B0113524
C0110174
D02207019

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5469110.201134%
B5467120.219499%
C546740.073166%
D54664307.866813%

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 7142 5470 3 3 0.04% 0.05%
B 7142 5469 8 8 0.11% 0.15%
C 7142 5469 1 1 0.01% 0.02%
D 7142 5469 470 470 6.58% 8.59%

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 10 83 435304 3545.55 609 596 122.6
A 13 248 69205 559.59 609 596 122.6
A 13 254 8247 62.4 609 596 122.6
B 5 172 86034 740.11 603 588 115.4
B 5 184 24886 210.46 603 588 115.4
B 0 230 23109 195.07 603 588 115.4
C 15 214 226373 1638.22 592 595 137.8
C 0 10 10193 69.64 592 595 137.8
C 0 239 4129 25.64 592 595 137.8
D 12 227 1589031 11228.28 580 563 141.5
D 9 49 848754 5995.54 580 563 141.5
D 2 250 402401 2840.44 580 563 141.5

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