ASTROSAT CZTI

Data Quality Report

Orbit 11473

Creation date: 2024-06-27T16:13:27.136672
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/AS1A04_021T04_9000001682_11473cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11473cztM0_level2_quad_clean.evt
Size (bytes)758,871,36072,840,960
Size723.7 MB 69.5 MB
Events in quadrant A7,451,308401,671
Events in quadrant B7,595,943384,279
Events in quadrant C3,281,609480,266
Events in quadrant D4,177,124447,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269003
B0272822
C0144842
D0170932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7054128218.174086%
B7054166923.660335%
C7054700.992345%
D70541422.013042%

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 8865 7057 848 848 9.57% 12.02%
B 8865 7057 1019 1019 11.49% 14.44%
C 8865 7057 0 0 0.00% 0.00%
D 8865 7057 62 62 0.70% 0.88%

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 8 5 4264588 26505.31 794 776 160.9
A 1 162 30017 181.77 794 776 160.9
A 9 143 23213 139.48 794 776 160.9
B 4 81 3206786 21581.9 778 759 148.6
B 4 239 866140 5825.45 778 759 148.6
B 3 64 302378 2030.4 778 759 148.6
C 14 234 8054 36.91 839 846 195.3
C 13 61 6191 27.37 839 846 195.3
C 1 3 2079 6.31 839 846 195.3
D 1 52 576075 2868.91 827 804 200.5
D 2 14 181475 901.02 827 804 200.5
D 10 253 86028 425.02 827 804 200.5

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