ASTROSAT CZTI

Data Quality Report

Orbit 28252

Creation date: 2024-06-27T19:49:39.547483
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_067T01_9000004076_28252cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28252cztM0_level2_quad_clean.evt
Size (bytes)545,607,360101,050,560
Size520.3 MB 96.4 MB
Events in quadrant A3,329,658672,034
Events in quadrant B3,507,605681,754
Events in quadrant C3,629,382640,862
Events in quadrant D5,599,584595,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142880
B0149440
C0152420
D0212310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6745340.504077%
B6746650.963534%
C67451001.482580%
D67456539.681245%

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 8906 6747 0 0 0.00% 0.00%
B 8907 6748 9 9 0.10% 0.13%
C 8906 6747 3 3 0.03% 0.04%
D 8906 6746 589 589 6.61% 8.73%

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 10623 56.88 859 842 172.0
A 3 137 8384 43.86 859 842 172.0
A 0 226 7392 38.09 859 842 172.0
B 10 246 77248 472.03 855 835 161.9
B 10 245 35288 212.83 855 835 161.9
B 12 111 20015 118.48 855 835 161.9
C 14 238 132586 689.77 822 830 191.0
C 3 233 119393 620.7 822 830 191.0
C 9 221 102851 534.1 822 830 191.0
D 1 52 808078 4309.07 791 771 187.4
D 5 222 785578 4188.97 791 771 187.4
D 8 195 429356 2287.61 791 771 187.4

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