ASTROSAT CZTI

Data Quality Report

Orbit 20220225_A11_065T13_9000004960_level2

Creation date: 2022-03-01T13:30:58.910945
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/AS1A11_065T13_9000004960cztM0_level2_bc.evt modeM0/AS1A11_065T13_9000004960cztM0_level2_quad_clean.evt
Size (bytes)963,241,920203,192,640
Size918.6 MB 193.8 MB
Events in quadrant A4,393,4501,311,537
Events in quadrant B6,363,4111,302,523
Events in quadrant C4,503,9271,279,521
Events in quadrant D12,765,3091,102,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375310
B0457360
C0358640
D0675300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167702451.460942%
B1677010316.147883%
C167701220.727490%
D16770212112.647585%

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 22351 16774 5 5 0.02% 0.03%
B 22351 16770 66 66 0.30% 0.39%
C 22351 16771 16 16 0.07% 0.10%
D 22351 16769 384 384 1.72% 2.29%

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 15 169 814553 4264.93 843 827 190.8
A 10 83 108362 563.62 843 827 190.8
A 7 48 58031 299.82 843 827 190.8
B 5 172 2030860 12045.22 830 810 168.5
B 5 255 685946 4065.23 830 810 168.5
B 0 190 202182 1194.83 830 810 168.5
C 15 214 682537 3542.57 821 814 192.4
C 14 67 344739 1787.2 821 814 192.4
C 0 10 203763 1054.62 821 814 192.4
D 8 195 5424621 26833.38 772 752 202.1
D 7 38 2147716 10621.62 772 752 202.1
D 2 249 673398 3327.77 772 752 202.1

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