ASTROSAT CZTI

Data Quality Report

Orbit 20559

Creation date: 2024-06-27T18:16:52.380658
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/AS1A05_072T04_9000003040_20559cztM0_level2.evt modeM0/AS1A05_072T04_9000003040_20559cztM0_level2_quad_clean.evt
Size (bytes)569,085,120100,739,520
Size542.7 MB 96.1 MB
Events in quadrant A3,782,364632,932
Events in quadrant B3,783,673639,482
Events in quadrant C3,865,402628,806
Events in quadrant D5,267,673600,477

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164482
B0163972
C0164842
D0212812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78921111.406488%
B78931632.065121%
C78931401.773724%
D78933504.434309%

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 8532 7894 1 1 0.01% 0.01%
B 8533 7895 6 6 0.07% 0.08%
C 8533 7895 0 0 0.00% 0.00%
D 8533 7895 242 242 2.84% 3.07%

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 14 239 92513 474.69 952 930 192.9
A 3 1 9429 44.05 952 930 192.9
A 5 16 8318 38.29 952 930 192.9
B 12 111 22687 118.68 949 923 183.4
B 7 220 22606 118.24 949 923 183.4
B 11 111 20165 104.93 949 923 183.4
C 14 238 142665 654.57 924 930 216.5
C 3 233 92013 420.65 924 930 216.5
C 3 9 25455 113.26 924 930 216.5
D 2 184 1186181 5253.1 923 894 225.6
D 5 222 283265 1251.45 923 894 225.6
D 13 153 162902 718.01 923 894 225.6

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