ASTROSAT CZTI

Data Quality Report

Orbit 20170923_G07_051T01_9000001550_level2

Creation date: 2025-11-17T07:22:37.053475
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/AS1G07_051T01_9000001550cztM0_level2.fits modeM0/AS1G07_051T01_9000001550cztM0_level2_quad_clean.evt
Size (bytes)456,131,520434,151,360
Size435.0 MB 414.0 MB
Events in quadrant A2,750,7742,583,285
Events in quadrant B2,593,0462,489,984
Events in quadrant C2,738,1702,508,319
Events in quadrant D2,299,5102,136,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010200
B010200
C010200
D010200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01057020
B01418480
C01023720
D01422280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499806181.236495%
B4997936017.205026%
C499783150.630277%
D4997932146.430701%

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 56011 49978 0 0 0.00% 0.00%
B 56011 49979 0 0 0.00% 0.00%
C 56011 49981 0 0 0.00% 0.00%
D 56011 49965 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 2559 10.37 716 665 182.6
A 7 110 2221 8.52 716 665 182.6
A 9 19 2119 7.96 716 665 182.6
B 2 9 2252 11.6 683 647 138.3
B 3 17 1673 7.42 683 647 138.3
B 14 254 1664 7.35 683 647 138.3
C 1 80 2038 7.2 723 670 190.1
C 1 81 1932 6.64 723 670 190.1
C 12 241 1923 6.59 723 670 190.1
D 6 231 1695 6.21 655 593 177.3
D 3 14 1693 6.2 655 593 177.3
D 3 31 1682 6.14 655 593 177.3

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