ASTROSAT CZTI

Data Quality Report

Orbit 27198

Creation date: 2024-06-27T19:37:36.797138
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_243T01_9000003918_27198cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27198cztM0_level2_quad_clean.evt
Size (bytes)537,393,600112,104,000
Size512.5 MB 106.9 MB
Events in quadrant A3,522,811768,673
Events in quadrant B3,861,157775,091
Events in quadrant C3,415,831720,834
Events in quadrant D5,045,895688,548

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145160
B0158670
C0140570
D0191850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6330901.421801%
B63311071.690096%
C63311231.942821%
D63313906.160164%

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 7685 6331 1 1 0.01% 0.02%
B 7686 6332 5 5 0.07% 0.08%
C 7686 6332 0 0 0.00% 0.00%
D 7686 6332 319 319 4.15% 5.04%

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 6 16 41311 228.06 899 888 177.2
A 13 254 10800 55.92 899 888 177.2
A 0 226 7996 40.1 899 888 177.2
B 3 64 239660 1476.36 882 866 161.7
B 10 245 71417 436.19 882 866 161.7
B 5 172 28776 172.56 882 866 161.7
C 14 238 136280 694.8 838 845 194.9
C 15 208 14059 67.79 838 845 194.9
C 13 61 5871 25.78 838 845 194.9
D 1 52 1008780 4620.71 826 813 218.1
D 2 250 282372 1290.72 826 813 218.1
D 5 222 240962 1100.89 826 813 218.1

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