ASTROSAT CZTI

Data Quality Report

Orbit 23121

Creation date: 2024-06-27T18:50:11.586592
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/AS1A08_008T01_9000003414_23121cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23121cztM0_level2_quad_clean.evt
Size (bytes)574,531,200128,828,160
Size547.9 MB 122.9 MB
Events in quadrant A5,948,635843,910
Events in quadrant B3,574,419895,061
Events in quadrant C3,380,828846,933
Events in quadrant D4,013,833820,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225181
B0153171
C0147611
D0168371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71056208.726249%
B71063514.939488%
C71052984.194229%
D71053544.982407%

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 7155 7105 265 265 3.70% 3.73%
B 7156 7107 28 28 0.39% 0.39%
C 7155 7106 1 1 0.01% 0.01%
D 7155 7106 106 106 1.48% 1.49%

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 6 16 2732410 16228.06 831 811 168.3
A 13 254 10709 58.8 831 811 168.3
A 4 2 8721 46.99 831 811 168.3
B 0 190 163394 1001.53 845 822 162.3
B 0 189 52014 315.37 845 822 162.3
B 0 228 21908 129.9 845 822 162.3
C 14 238 130013 675.11 815 816 191.4
C 0 207 23821 120.21 815 816 191.4
C 2 16 15029 74.27 815 816 191.4
D 12 233 310419 1544.05 822 796 200.5
D 7 38 179838 892.86 822 796 200.5
D 1 52 143718 712.74 822 796 200.5

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