ASTROSAT CZTI

Data Quality Report

Orbit 30241

Creation date: 2024-06-27T20:12:34.372662
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_007T01_9000004350_30241cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30241cztM0_level2_quad_clean.evt
Size (bytes)569,237,760100,779,840
Size542.9 MB 96.1 MB
Events in quadrant A3,666,924640,921
Events in quadrant B5,570,203649,067
Events in quadrant C3,632,025634,563
Events in quadrant D3,878,780622,483

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152852
B0219362
C0150672
D0156552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7257951.309081%
B72581251.722238%
C72581111.529347%
D7258660.909341%

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 8022 7257 12 12 0.15% 0.17%
B 8023 7259 3 3 0.04% 0.04%
C 8023 7258 0 0 0.00% 0.00%
D 8023 7259 13 13 0.16% 0.18%

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 99355 538.08 911 892 183.0
A 14 239 34641 184.43 911 892 183.0
A 13 254 13020 66.28 911 892 183.0
B 6 159 2010827 11566.16 899 876 173.8
B 12 111 21323 117.66 899 876 173.8
B 11 111 19822 109.02 899 876 173.8
C 14 238 140966 675.94 880 887 207.2
C 3 233 42880 202.63 880 887 207.2
C 2 114 16817 76.87 880 887 207.2
D 8 195 384524 1781.42 890 872 215.4
D 2 250 59511 272.28 890 872 215.4
D 2 234 28266 127.2 890 872 215.4

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