ASTROSAT CZTI

Data Quality Report

Orbit 21455

Creation date: 2024-06-27T18:27:59.497699
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_117T01_9000003166_21455cztM0_level2.evt modeM0/AS1A05_117T01_9000003166_21455cztM0_level2_quad_clean.evt
Size (bytes)477,253,440103,006,080
Size455.1 MB 98.2 MB
Events in quadrant A3,378,770665,041
Events in quadrant B3,447,035671,719
Events in quadrant C3,375,566648,653
Events in quadrant D3,771,256641,338

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146042
B0147432
C0146442
D0159362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7075961.356890%
B70761241.752402%
C70761171.653477%
D7076871.229508%

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 7415 7076 0 0 0.00% 0.00%
B 7416 7076 7 7 0.09% 0.10%
C 7416 7077 0 0 0.00% 0.00%
D 7416 7077 34 34 0.46% 0.48%

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 13 254 11091 58.35 874 856 175.4
A 11 47 9759 50.75 874 856 175.4
A 3 137 7811 39.65 874 856 175.4
B 0 197 53446 313.77 866 845 167.6
B 12 111 20488 117.17 866 845 167.6
B 11 111 18488 105.24 866 845 167.6
C 14 238 131374 669.89 830 838 194.9
C 13 61 5770 25.31 830 838 194.9
C 8 128 5269 22.74 830 838 194.9
D 12 235 141239 684.58 846 822 205.1
D 14 34 130202 630.77 846 822 205.1
D 1 20 78077 376.65 846 822 205.1

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