ASTROSAT CZTI

Data Quality Report

Orbit 16503

Creation date: 2024-06-27T17:23:39.757707
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_174T01_9000002440_16503cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16503cztM0_level2_quad_clean.evt
Size (bytes)450,809,28084,628,800
Size429.9 MB 80.7 MB
Events in quadrant A3,376,344526,535
Events in quadrant B3,426,706541,068
Events in quadrant C3,346,675517,592
Events in quadrant D3,044,211507,123

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145903
B0144352
C0139492
D0138362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6753761.125426%
B6753921.362357%
C6753721.066193%
D6753280.414631%

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 7699 6755 31 31 0.40% 0.46%
B 7699 6754 31 31 0.40% 0.46%
C 7699 6755 0 0 0.00% 0.00%
D 7699 6754 5 5 0.06% 0.07%

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 283683 1763.55 803 787 160.4
A 0 226 6925 38.26 803 787 160.4
A 15 223 6705 36.89 803 787 160.4
B 10 16 80652 515.55 812 792 154.9
B 4 48 41257 261.23 812 792 154.9
B 4 173 41232 261.07 812 792 154.9
C 3 233 145553 788.85 784 788 183.5
C 14 238 121126 655.74 784 788 183.5
C 7 247 19043 99.47 784 788 183.5
D 5 222 31939 162.16 788 764 192.2
D 2 234 22335 112.2 788 764 192.2
D 2 120 14355 70.7 788 764 192.2

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