ASTROSAT CZTI

Data Quality Report

Orbit 07853

Creation date: 2024-06-27T15:24:48.805277
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/AS1G06_077T02_9000001076_07853cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07853cztM0_level2_quad_clean.evt
Size (bytes)1,708,367,040296,210,880
Size1.6 GB 282.5 MB
Events in quadrant A11,252,3481,825,285
Events in quadrant B13,446,2181,843,711
Events in quadrant C11,916,8421,857,148
Events in quadrant D13,465,0141,757,621

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0504127
B0561134
C0522364
D0567704

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245334441.809807%
B2453410624.328687%
C245343361.369528%
D245346622.698296%

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 26619 24539 4 4 0.02% 0.02%
B 26619 24539 457 457 1.72% 1.86%
C 26619 24539 0 0 0.00% 0.00%
D 26619 24539 202 202 0.76% 0.82%

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 15 174 30136 46.52 2906 2843 586.7
A 0 226 27679 42.34 2906 2843 586.7
A 12 194 25832 39.19 2906 2843 586.7
B 4 239 1573173 2821.02 2901 2827 556.7
B 4 173 204902 363.01 2901 2827 556.7
B 11 51 103124 180.18 2901 2827 556.7
C 1 16 742667 1120.94 2855 2875 660.0
C 8 229 29347 40.11 2855 2875 660.0
C 13 61 22030 29.02 2855 2875 660.0
D 1 52 739626 1056.88 2840 2754 697.2
D 2 152 458822 654.13 2840 2754 697.2
D 12 233 450446 642.11 2840 2754 697.2

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