ASTROSAT CZTI

Data Quality Report

Orbit 26561

Creation date: 2024-06-27T19:30:29.069640
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/AS1T03_220T01_9000003842_26561cztM0_level2.evt modeM0/AS1T03_220T01_9000003842_26561cztM0_level2_quad_clean.evt
Size (bytes)578,079,36079,882,560
Size551.3 MB 76.2 MB
Events in quadrant A3,372,278506,816
Events in quadrant B3,911,723512,343
Events in quadrant C3,678,067499,409
Events in quadrant D6,131,759473,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140140
B0157100
C0150370
D0223160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100741.213115%
B61001562.557377%
C60991252.049516%
D609994215.445155%

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 7475 6100 0 0 0.00% 0.00%
B 7475 6100 49 49 0.66% 0.80%
C 7474 6099 8 8 0.11% 0.13%
D 7474 6099 818 818 10.94% 13.41%

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 5 168 28823 165.91 863 850 168.6
A 0 13 13981 77.88 863 850 168.6
A 13 254 10653 58.14 863 850 168.6
B 0 189 252863 1641.65 848 831 153.5
B 5 172 214176 1389.66 848 831 153.5
B 3 64 87654 565.54 848 831 153.5
C 4 254 172075 904.46 826 832 189.3
C 14 238 134445 705.71 826 832 189.3
C 3 233 132346 694.62 826 832 189.3
D 7 80 1944446 10401.69 780 762 186.9
D 1 52 984745 5265.82 780 762 186.9
D 2 250 158814 845.82 780 762 186.9

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