ASTROSAT CZTI

Data Quality Report

Orbit 27841

Creation date: 2024-06-27T19:45:04.923162
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/AS1A10_002T04_9000004022_27841cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27841cztM0_level2_quad_clean.evt
Size (bytes)529,240,32092,099,520
Size504.7 MB 87.8 MB
Events in quadrant A3,503,129586,111
Events in quadrant B3,836,074572,814
Events in quadrant C3,670,502561,866
Events in quadrant D4,515,385552,452

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153030
B0162300
C0155520
D0185500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7411530.715153%
B74111431.929564%
C7410941.268556%
D74111572.118473%

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 7801 7411 3 3 0.04% 0.04%
B 7801 7411 59 59 0.76% 0.80%
C 7800 7411 0 0 0.00% 0.00%
D 7801 7411 103 103 1.32% 1.39%

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 13 248 52294 283.7 890 870 181.3
A 0 31 15234 79.24 890 870 181.3
A 13 254 13603 70.25 890 870 181.3
B 10 245 310934 1830.82 875 851 169.4
B 15 33 39899 230.55 875 851 169.4
B 0 190 33601 193.37 875 851 169.4
C 3 233 193342 956.69 856 861 201.2
C 14 238 134760 665.52 856 861 201.2
C 13 61 5905 25.07 856 861 201.2
D 1 52 1045697 5117.77 860 839 204.2
D 2 250 135733 660.72 860 839 204.2
D 2 120 32392 154.55 860 839 204.2

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