ASTROSAT CZTI

Data Quality Report

Orbit 20240214_A05_166T01_9000006070_level2

Creation date: 2024-03-01T11:52:23.892846
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_166T01_9000006070cztM0_level2.fits modeM0/AS1A05_166T01_9000006070cztM0_level2_quad_clean.evt
Size (bytes)394,297,920455,653,440
Size376.0 MB 434.5 MB
Events in quadrant A2,312,7442,822,327
Events in quadrant B2,248,5382,849,039
Events in quadrant C2,365,4642,745,578
Events in quadrant D1,949,7782,320,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09020
B09020
C09020
D09020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01425210
B01095100
C0989030
D01327160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4460612492.800072%
B4460620484.591311%
C446018571.921482%
D4460534067.635915%

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 90351 44599 0 0 0.00% 0.00%
B 90351 44589 0 0 0.00% 0.00%
C 90352 44586 0 0 0.00% 0.00%
D 90351 44528 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 7 110 1921 8.87 602 564 153.0
A 15 236 1855 8.44 602 564 153.0
A 14 95 1827 8.26 602 564 153.0
B 2 9 2086 12.87 595 567 118.0
B 2 8 1709 9.68 595 567 118.0
B 3 17 1652 9.19 595 567 118.0
C 3 202 1846 7.79 626 583 162.2
C 1 81 1826 7.67 626 583 162.2
C 1 80 1801 7.51 626 583 162.2
D 10 189 1470 6.21 559 508 154.8
D 3 14 1452 6.1 559 508 154.8
D 15 47 1425 5.92 559 508 154.8

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