ASTROSAT CZTI

Data Quality Report

Orbit 28915

Creation date: 2024-06-27T19:58:10.715126
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_064T02_9000004146_28915cztM0_level2.evt modeM0/AS1A10_064T02_9000004146_28915cztM0_level2_quad_clean.evt
Size (bytes)1,791,610,560220,671,360
Size1.7 GB 210.4 MB
Events in quadrant A8,527,9841,410,592
Events in quadrant B8,630,9731,435,458
Events in quadrant C17,470,9561,327,413
Events in quadrant D18,429,0341,279,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367673
B0369933
C0646588
D0672613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178351330.745725%
B178361791.003588%
C1783417309.700572%
D17834311817.483459%

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 19915 17838 0 0 0.00% 0.00%
B 19916 17839 7 7 0.04% 0.04%
C 19915 17838 466 466 2.34% 2.61%
D 19915 17838 2923 2923 14.68% 16.39%

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 14 235 57925 129.27 2160 2113 431.7
A 15 169 41052 90.19 2160 2113 431.7
A 9 130 36709 80.13 2160 2113 431.7
B 10 245 57950 136.43 2149 2093 409.4
B 12 111 51236 120.03 2149 2093 409.4
B 5 255 47518 110.95 2149 2093 409.4
C 3 233 9053164 19041.44 2026 2037 475.3
C 14 238 341690 714.55 2026 2037 475.3
C 15 208 59134 120.12 2026 2037 475.3
D 8 195 9285711 19995.31 1949 1897 464.3
D 1 52 1579680 3398.2 1949 1897 464.3
D 2 234 79478 167.09 1949 1897 464.3

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