ASTROSAT CZTI

Data Quality Report

Orbit 00187

Creation date: 2024-06-27T13:57:30.207200
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_120T01_9000000016_00187cztM0_level2.evt modeM0/AS1P01_120T01_9000000016_00187cztM0_level2_quad_clean.evt
Size (bytes)964,612,80073,298,880
Size919.9 MB 69.9 MB
Events in quadrant A6,754,228460,264
Events in quadrant B6,720,120474,751
Events in quadrant C6,244,033468,683
Events in quadrant D9,134,703434,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224112
B0224112
C0224112
D0224112

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04782723915
B04765023826
C04479822406
D06211331058

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03015
B03015
C03015
D03015

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543650.091979%
B543680.147167%
C543520.036799%
D543665912.122884%

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 7027 5438 182 182 2.59% 3.35%
B 7027 5437 115 115 1.64% 2.12%
C 7027 5438 65 65 0.93% 1.20%
D 7027 5438 1573 1573 22.39% 28.93%

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 17 41177 106.62 1701 1689 370.4
A 12 244 40463 104.69 1701 1689 370.4
A 15 127 31388 80.19 1701 1689 370.4
B 0 247 64110 157.71 1712 1720 395.6
B 5 85 21450 49.87 1712 1720 395.6
B 14 50 14828 33.13 1712 1720 395.6
C 10 33 17696 36.83 1576 1639 436.0
C 9 128 12121 24.04 1576 1639 436.0
C 0 188 7323 13.04 1576 1639 436.0
D 12 249 2947146 6466.28 1515 1568 455.5
D 13 6 187906 409.06 1515 1568 455.5
D 2 106 27339 56.57 1515 1568 455.5

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