ASTROSAT CZTI

Data Quality Report

Orbit 08809

Creation date: 2024-06-27T15:37:31.713179
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_135T01_9000001226_08809cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08809cztM0_level2_quad_clean.evt
Size (bytes)520,318,08075,876,480
Size496.2 MB 72.4 MB
Events in quadrant A3,796,662454,135
Events in quadrant B4,351,318447,845
Events in quadrant C3,351,660448,519
Events in quadrant D3,762,075438,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158533
B0176512
C0149622
D0161882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73081071.464149%
B73083274.474548%
C7308720.985222%
D7308931.272578%

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 8953 7308 14 14 0.16% 0.19%
B 8953 7308 156 156 1.74% 2.13%
C 8953 7308 0 0 0.00% 0.00%
D 8953 7308 17 17 0.19% 0.23%

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 8 5 310234 1712.34 884 864 180.7
A 15 174 68319 373.36 884 864 180.7
A 13 251 15287 79.83 884 864 180.7
B 10 16 918050 5436.88 874 851 168.7
B 12 111 18800 106.39 874 851 168.7
B 11 111 14901 83.28 874 851 168.7
C 1 16 6974 30.57 856 859 200.0
C 13 61 6533 28.36 856 859 200.0
C 8 222 3997 15.68 856 859 200.0
D 2 152 383395 1831.66 848 830 208.9
D 2 14 57182 269.8 848 830 208.9
D 5 233 38749 181.55 848 830 208.9

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