ASTROSAT CZTI

Data Quality Report

Orbit 20240104_A13_009T01_9000006016_level2

Creation date: 2024-01-08T12:33:53.137907
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/AS1A13_009T01_9000006016cztM0_level2.fits modeM0/AS1A13_009T01_9000006016cztM0_level2_quad_clean.evt
Size (bytes)424,797,120449,084,160
Size405.1 MB 428.3 MB
Events in quadrant A2,444,3602,582,686
Events in quadrant B2,489,8162,804,252
Events in quadrant C2,609,4022,724,751
Events in quadrant D2,009,5362,183,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09800
B09800
C09800
D09800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01849550
B01144590
C01004580
D02087890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48134643713.373083%
B4813416333.392612%
C481343040.631570%
D48134898118.658329%

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 54739 48117 0 0 0.00% 0.00%
B 54739 48128 0 0 0.00% 0.00%
C 54739 48134 0 0 0.00% 0.00%
D 54739 48084 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 2000 8.59 637 595 163.6
A 7 110 1997 8.57 637 595 163.6
A 14 95 1940 8.22 637 595 163.6
B 2 9 2349 12.96 659 625 133.1
B 2 8 1852 9.22 659 625 133.1
B 3 17 1802 8.85 659 625 133.1
C 3 202 1968 7.45 689 640 178.2
C 1 81 1955 7.38 689 640 178.2
C 3 203 1922 7.19 689 640 178.2
D 8 176 2068 9.54 576 522 162.1
D 8 192 1481 5.92 576 522 162.1
D 4 16 1465 5.82 576 522 162.1

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