ASTROSAT CZTI

Data Quality Report

Orbit 09480

Creation date: 2024-06-27T15:46:39.253220
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/AS1A03_051T01_9000001346_09480cztM0_level2.evt modeM0/AS1A03_051T01_9000001346_09480cztM0_level2_quad_clean.evt
Size (bytes)1,065,081,600192,816,000
Size1015.7 MB 183.9 MB
Events in quadrant A9,454,8791,206,744
Events in quadrant B6,988,3881,212,364
Events in quadrant C6,689,5071,191,645
Events in quadrant D8,082,0211,166,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384123
B0313122
C0312542
D0347972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15394870.565155%
B15394700.454723%
C15394360.233857%
D153942601.688970%

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 16554 15396 16 16 0.10% 0.10%
B 16554 15396 1 1 0.01% 0.01%
C 16554 15396 5 5 0.03% 0.03%
D 16554 15396 194 194 1.17% 1.26%

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 8 5 2403602 6681.73 1760 1721 359.5
A 1 162 149764 411.84 1760 1721 359.5
A 1 178 51150 137.51 1760 1721 359.5
B 0 214 106693 312.38 1757 1715 336.1
B 12 111 36537 103.62 1757 1715 336.1
B 11 111 30280 85.0 1757 1715 336.1
C 5 128 45039 110.66 1693 1700 391.6
C 14 234 30035 72.35 1693 1700 391.6
C 13 61 12694 28.07 1693 1700 391.6
D 1 52 689199 1639.72 1687 1641 419.3
D 8 195 450551 1070.58 1687 1641 419.3
D 12 233 208906 494.29 1687 1641 419.3

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