ASTROSAT CZTI

Data Quality Report

Orbit 00895

Creation date: 2024-06-27T14:04:24.300734
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/AS1P01_161T03_9000000178_00895cztM0_level2.evt modeM0/AS1P01_161T03_9000000178_00895cztM0_level2_quad_clean.evt
Size (bytes)964,837,44069,111,360
Size920.1 MB 65.9 MB
Events in quadrant A6,678,646438,685
Events in quadrant B8,133,433428,859
Events in quadrant C7,772,236410,774
Events in quadrant D6,256,374414,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239150
B0282470
C0272030
D0226800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5726350.611247%
B57261803.143556%
C57262985.204331%
D5725290.506550%

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 6916 5727 152 152 2.20% 2.65%
B 6916 5727 659 659 9.53% 11.51%
C 6916 5727 488 488 7.06% 8.52%
D 6915 5726 104 104 1.50% 1.82%

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 15 233 29205 66.72 1731 1749 411.5
A 14 170 7907 14.96 1731 1749 411.5
A 11 79 7023 12.82 1731 1749 411.5
B 3 0 898820 2154.23 1792 1803 416.4
B 7 221 161003 382.33 1792 1803 416.4
B 8 38 83992 197.38 1792 1803 416.4
C 9 83 1274407 2828.5 1616 1673 450.0
C 9 52 125058 274.21 1616 1673 450.0
C 3 111 22474 46.23 1616 1673 450.0
D 1 4 134597 266.81 1613 1676 498.2
D 10 157 17322 31.41 1613 1676 498.2
D 13 13 14794 26.33 1613 1676 498.2

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