ASTROSAT CZTI

Data Quality Report

Orbit 23003

Creation date: 2024-06-27T18:48:35.008368
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_004T03_9000003400_23003cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_23003cztM0_level2_quad_clean.evt
Size (bytes)518,109,12081,014,400
Size494.1 MB 77.3 MB
Events in quadrant A3,394,441502,513
Events in quadrant B3,613,755508,680
Events in quadrant C3,773,099485,220
Events in quadrant D4,434,105469,081

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144232
B0149172
C0154762
D0176442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69961131.615209%
B69961972.815895%
C69963144.488279%
D69962373.387650%

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 7686 6997 0 0 0.00% 0.00%
B 7686 6997 27 27 0.35% 0.39%
C 7686 6997 79 79 1.03% 1.13%
D 7686 6997 96 96 1.25% 1.37%

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 13 254 10033 51.73 880 862 177.3
A 3 137 7817 39.23 880 862 177.3
A 0 226 7501 37.45 880 862 177.3
B 4 216 102481 600.06 878 855 169.4
B 0 189 47581 275.9 878 855 169.4
B 12 111 20516 116.09 878 855 169.4
C 10 223 306692 1571.67 833 839 194.6
C 14 238 131788 672.9 833 839 194.6
C 7 247 57107 289.14 833 839 194.6
D 12 227 334544 1606.57 850 826 207.7
D 13 153 300028 1440.4 850 826 207.7
D 1 52 278236 1335.49 850 826 207.7

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