ASTROSAT CZTI

Data Quality Report

Orbit 18507

Creation date: 2024-06-27T17:51:07.368228
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/AS1A05_212T07_9000002746_18507cztM0_level2.evt modeM0/AS1A05_212T07_9000002746_18507cztM0_level2_quad_clean.evt
Size (bytes)518,774,40073,687,680
Size494.7 MB 70.3 MB
Events in quadrant A3,631,056425,262
Events in quadrant B3,666,542439,873
Events in quadrant C3,590,463429,143
Events in quadrant D4,321,001422,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154772
B0155872
C0153432
D0178782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73881231.664862%
B73881101.488901%
C73881421.922036%
D73884355.887926%

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 9013 7388 13 13 0.14% 0.18%
B 9013 7388 3 3 0.03% 0.04%
C 9013 7388 0 0 0.00% 0.00%
D 9013 7388 314 314 3.48% 4.25%

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 0 13 75783 404.45 908 890 185.2
A 15 174 45723 242.11 908 890 185.2
A 13 254 11229 55.83 908 890 185.2
B 6 36 53251 296.49 911 889 176.6
B 12 111 21369 115.96 911 889 176.6
B 11 111 18446 99.41 911 889 176.6
C 14 238 136491 656.8 883 890 206.5
C 9 54 6816 28.7 883 890 206.5
C 13 61 6181 25.63 883 890 206.5
D 1 52 888348 4139.46 873 848 214.4
D 7 38 40703 185.89 873 848 214.4
D 2 234 30958 140.44 873 848 214.4

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