ASTROSAT CZTI

Data Quality Report

Orbit 21440

Creation date: 2024-06-27T18:27:50.827708
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_140T01_9000003160_21440cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21440cztM0_level2_quad_clean.evt
Size (bytes)520,727,04092,537,280
Size496.6 MB 88.3 MB
Events in quadrant A3,216,197599,792
Events in quadrant B3,345,829600,771
Events in quadrant C3,198,305582,290
Events in quadrant D5,555,474552,341

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138781
B0141731
C0138771
D0210841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701670.999851%
B6701951.417699%
C6701891.328160%
D67012954.402328%

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 7276 6701 0 0 0.00% 0.00%
B 7276 6701 9 9 0.12% 0.13%
C 7276 6701 0 0 0.00% 0.00%
D 7276 6702 263 263 3.61% 3.92%

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 10959 60.97 831 815 166.4
A 11 47 7620 40.9 831 815 166.4
A 0 226 7088 37.7 831 815 166.4
B 0 190 36568 227.0 822 803 157.6
B 0 230 29065 179.38 822 803 157.6
B 12 111 18813 114.31 822 803 157.6
C 14 238 125552 673.88 787 793 185.1
C 13 61 5443 25.12 787 793 185.1
C 3 233 4373 19.34 787 793 185.1
D 12 235 1024865 5336.07 791 768 191.9
D 1 52 558132 2904.15 791 768 191.9
D 1 20 414254 2154.47 791 768 191.9

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