ASTROSAT CZTI

Data Quality Report

Orbit 27486

Creation date: 2024-06-27T19:40:31.832549
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_249T01_9000003934_27486cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27486cztM0_level2_quad_clean.evt
Size (bytes)492,603,840114,197,760
Size469.8 MB 108.9 MB
Events in quadrant A3,330,338768,454
Events in quadrant B3,639,908789,161
Events in quadrant C3,442,342733,723
Events in quadrant D4,058,601707,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140020
B0150000
C0143750
D0164510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6591360.546199%
B6591600.910332%
C6591751.137915%
D65911221.851009%

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 7856 6592 3 3 0.04% 0.05%
B 7856 6591 0 0 0.00% 0.00%
C 7856 6592 3 3 0.04% 0.05%
D 7856 6591 115 115 1.46% 1.74%

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 10336 55.71 859 843 170.4
A 8 192 10239 55.14 859 843 170.4
A 3 137 7770 40.65 859 843 170.4
B 0 189 181217 1119.52 863 844 161.1
B 3 64 52194 318.71 863 844 161.1
B 15 32 21414 127.67 863 844 161.1
C 14 238 134632 698.11 823 832 191.7
C 15 208 94520 488.83 823 832 191.7
C 13 61 5677 25.28 823 832 191.7
D 1 52 895415 4638.28 815 793 192.9
D 2 250 54320 277.52 815 793 192.9
D 2 234 25405 127.6 815 793 192.9

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