ASTROSAT CZTI

Data Quality Report

Orbit 28145

Creation date: 2024-06-27T19:48:34.295904
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_045T04_9000004066_28145cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28145cztM0_level2_quad_clean.evt
Size (bytes)562,593,60078,681,600
Size536.5 MB 75.0 MB
Events in quadrant A3,638,600472,167
Events in quadrant B4,545,846476,025
Events in quadrant C3,725,280457,829
Events in quadrant D4,616,744451,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156270
B0182870
C0158180
D0187040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7548700.927398%
B75482232.954425%
C75471481.961044%
D75471271.682788%

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 7943 7549 1 1 0.01% 0.01%
B 7943 7549 48 48 0.60% 0.64%
C 7942 7548 0 0 0.00% 0.00%
D 7942 7548 64 64 0.81% 0.85%

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 15 174 18079 90.35 938 918 189.9
A 13 254 12591 61.45 938 918 189.9
A 3 137 9258 43.91 938 918 189.9
B 10 245 861545 4798.24 921 896 179.4
B 10 246 39549 215.5 921 896 179.4
B 12 111 22359 119.66 921 896 179.4
C 14 238 141508 661.62 897 903 212.5
C 2 16 63123 292.78 897 903 212.5
C 3 233 22116 99.82 897 903 212.5
D 1 52 505541 2311.01 907 881 218.4
D 5 222 233144 1063.61 907 881 218.4
D 8 195 122258 555.83 907 881 218.4

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