ASTROSAT CZTI

Data Quality Report

Orbit 20170728_A03_009T01_9000001412_level2

Creation date: 2025-11-15T15:55:51.111402
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_009T01_9000001412cztM0_level2.fits modeM0/AS1A03_009T01_9000001412cztM0_level2_quad_clean.evt
Size (bytes)308,200,320287,536,320
Size293.9 MB 274.2 MB
Events in quadrant A1,858,6061,679,071
Events in quadrant B1,805,1601,686,822
Events in quadrant C1,862,2581,649,894
Events in quadrant D1,510,1041,396,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06920
B06800
C06920
D06880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720020
B0712310
C0692080
D0974750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A335307482.230838%
B335417662.283772%
C336135611.668997%
D3274717635.383699%

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 39645 33852 0 0 0.00% 0.00%
B 39646 33901 0 0 0.00% 0.00%
C 39645 33943 0 0 0.00% 0.00%
D 39645 33014 0 0 0.00% 0.00%

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 0 29 1826 11.17 483 450 123.2
A 7 110 1504 8.56 483 450 123.2
A 0 30 1414 7.83 483 450 123.2
B 2 9 1518 11.1 477 454 95.8
B 3 17 1238 8.18 477 454 95.8
B 3 80 1215 7.94 477 454 95.8
C 1 81 1425 7.52 491 456 128.9
C 1 80 1354 6.97 491 456 128.9
C 12 241 1294 6.5 491 456 128.9
D 6 231 1124 6.26 431 391 117.2
D 3 14 1113 6.16 431 391 117.2
D 10 189 1088 5.95 431 391 117.2

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