ASTROSAT CZTI

Data Quality Report

Orbit 20211206_A11_060T01_9000004804_level2

Creation date: 2025-12-30T20:00:13.080112
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/AS1A11_060T01_9000004804cztM0_level2.fits modeM0/AS1A11_060T01_9000004804cztM0_level2_quad_clean.evt
Size (bytes)1,870,954,5601,608,537,600
Size1.7 GB 1.5 GB
Events in quadrant A11,667,0549,569,195
Events in quadrant B10,759,8408,866,800
Events in quadrant C11,283,9548,883,046
Events in quadrant D9,652,5588,102,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07390
B07390
C07390
D07390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03909050
B05424480
C04870310
D06075600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039660
B039660
C039660
D039660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1940342340.120597%
B194034140247.227599%
C19403431731.635280%
D19403488674.569818%

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 267916 194033 0 0 0.00% 0.00%
B 267916 193892 0 0 0.00% 0.00%
C 267916 194006 0 0 0.00% 0.00%
D 267915 193884 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 9608 8.99 3036 2850 752.0
A 0 29 9273 8.54 3036 2850 752.0
A 9 19 9226 8.48 3036 2850 752.0
B 2 9 9228 11.53 2851 2715 564.9
B 3 80 8496 10.23 2851 2715 564.9
B 2 8 7562 8.58 2851 2715 564.9
C 1 81 9538 8.91 2988 2817 754.7
C 1 80 9295 8.58 2988 2817 754.7
C 3 202 8830 7.97 2988 2817 754.7
D 7 3 7138 6.38 2755 2522 723.1
D 3 14 6934 6.1 2755 2522 723.1
D 10 189 6911 6.07 2755 2522 723.1

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