ASTROSAT CZTI

Data Quality Report

Orbit 21670

Creation date: 2024-06-27T18:30:54.936373
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_143T01_9000003208_21670cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21670cztM0_level2_quad_clean.evt
Size (bytes)501,220,80073,872,000
Size478.0 MB 70.4 MB
Events in quadrant A3,243,537459,578
Events in quadrant B3,541,575465,894
Events in quadrant C3,312,768448,163
Events in quadrant D4,656,695425,890

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131341
B0140501
C0133721
D0181131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6271961.530856%
B62711492.376017%
C62711572.503588%
D62711852.950088%

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 7441 6272 0 0 0.00% 0.00%
B 7441 6272 21 21 0.28% 0.33%
C 7441 6272 0 0 0.00% 0.00%
D 7441 6272 65 65 0.87% 1.04%

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 13 254 9640 51.99 842 827 169.5
A 0 226 7142 37.25 842 827 169.5
A 3 137 6838 35.46 842 827 169.5
B 3 64 169724 1076.76 839 820 156.9
B 0 230 32228 200.23 839 820 156.9
B 12 111 18616 113.45 839 820 156.9
C 14 238 127411 673.69 809 815 187.9
C 8 208 15869 80.11 809 815 187.9
C 10 22 9074 43.95 809 815 187.9
D 7 238 1098145 5535.79 813 789 198.2
D 1 52 296900 1493.78 813 789 198.2
D 13 153 76305 380.95 813 789 198.2

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