ASTROSAT CZTI

Data Quality Report

Orbit 21062

Creation date: 2024-06-27T18:23:18.015180
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/AS1A05_155T04_9000003114_21062cztM0_level2.evt modeM0/AS1A05_155T04_9000003114_21062cztM0_level2_quad_clean.evt
Size (bytes)316,797,12063,809,280
Size302.1 MB 60.9 MB
Events in quadrant A2,244,859406,846
Events in quadrant B2,408,753415,194
Events in quadrant C2,268,007399,893
Events in quadrant D2,362,196390,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094921
B099021
C095121
D0100401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4554771.690821%
B45531062.328135%
C4553942.064573%
D4553551.207995%

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 5724 4555 0 0 0.00% 0.00%
B 5723 4554 5 5 0.09% 0.11%
C 5723 4554 0 0 0.00% 0.00%
D 5723 4554 10 10 0.17% 0.22%

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 13 254 5126 38.64 582 569 117.9
A 0 226 4934 37.01 582 569 117.9
A 3 137 4842 36.23 582 569 117.9
B 7 220 93242 830.47 581 566 111.6
B 3 64 14898 128.43 581 566 111.6
B 12 111 13118 112.48 581 566 111.6
C 14 238 87530 666.23 559 562 130.5
C 13 61 3908 25.63 559 562 130.5
C 3 202 1332 5.9 559 562 130.5
D 1 52 94081 693.03 566 552 135.0
D 12 233 66217 486.56 566 552 135.0
D 9 1 40401 295.27 566 552 135.0

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