ASTROSAT CZTI

Data Quality Report

Orbit 19730

Creation date: 2024-06-27T18:06:07.451329
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_013T01_9000002944_19730cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19730cztM0_level2_quad_clean.evt
Size (bytes)483,678,72081,748,800
Size461.3 MB 78.0 MB
Events in quadrant A3,183,072514,783
Events in quadrant B3,427,854528,753
Events in quadrant C4,091,546500,098
Events in quadrant D3,507,741481,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134442
B0140852
C0165032
D0145912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645960.092894%
B6459580.897972%
C6459941.455334%
D6459981.517263%

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 7794 6460 0 0 0.00% 0.00%
B 7794 6460 20 20 0.26% 0.31%
C 7794 6460 1 1 0.01% 0.02%
D 7794 6460 86 86 1.10% 1.33%

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 6 16 26210 156.54 815 801 162.3
A 13 254 7992 44.3 815 801 162.3
A 0 226 7162 39.19 815 801 162.3
B 7 220 97838 624.0 823 805 155.5
B 4 216 45076 284.7 823 805 155.5
B 4 171 28883 180.57 823 805 155.5
C 3 233 880853 4849.44 791 798 181.5
C 14 238 125335 686.25 791 798 181.5
C 13 61 5560 26.24 791 798 181.5
D 1 52 214599 1111.55 791 769 192.4
D 7 38 106843 551.4 791 769 192.4
D 12 218 74531 383.43 791 769 192.4

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