ASTROSAT CZTI

Data Quality Report

Orbit 21026

Creation date: 2024-06-27T18:22:38.827282
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_075T06_9000003104_21026cztM0_level2.evt modeM0/AS1A05_075T06_9000003104_21026cztM0_level2_quad_clean.evt
Size (bytes)463,331,52092,563,200
Size441.9 MB 88.3 MB
Events in quadrant A2,979,563602,543
Events in quadrant B3,520,736604,634
Events in quadrant C3,115,569579,934
Events in quadrant D3,973,717561,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132082
B0146541
C0134371
D0161401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A652090.138037%
B6520350.536810%
C6520480.736196%
D65211181.809538%

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 7475 6521 0 0 0.00% 0.00%
B 7475 6521 5 5 0.07% 0.08%
C 7475 6521 13 13 0.17% 0.20%
D 7476 6522 102 102 1.36% 1.56%

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 7652 44.26 772 754 155.9
A 0 226 6627 37.68 772 754 155.9
A 3 137 6171 34.76 772 754 155.9
B 0 189 256627 1744.97 772 753 146.6
B 4 216 85491 577.88 772 753 146.6
B 7 220 35207 234.96 772 753 146.6
C 14 238 115314 652.97 747 751 175.4
C 9 54 82163 464.02 747 751 175.4
C 10 91 5604 27.66 747 751 175.4
D 1 239 649700 3518.35 754 732 184.5
D 1 52 237774 1285.11 754 732 184.5
D 13 172 44986 239.92 754 732 184.5

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