ASTROSAT CZTI

Data Quality Report

Orbit 20742

Creation date: 2024-06-27T18:19:03.385759
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_063T03_9000003066_20742cztM0_level2.evt modeM0/AS1A05_063T03_9000003066_20742cztM0_level2_quad_clean.evt
Size (bytes)489,000,960116,472,960
Size466.3 MB 111.1 MB
Events in quadrant A3,288,732811,075
Events in quadrant B3,593,774794,149
Events in quadrant C3,259,772756,034
Events in quadrant D4,258,363745,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134081
B0144581
C0130931
D0163991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60251201.991701%
B60261732.870893%
C60261282.124129%
D60263135.194159%

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 7340 6025 0 0 0.00% 0.00%
B 7341 6026 31 31 0.42% 0.51%
C 7341 6026 0 0 0.00% 0.00%
D 7341 6026 179 179 2.44% 2.97%

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 0 226 7574 39.97 854 840 168.5
A 3 137 6298 32.4 854 840 168.5
A 12 194 6193 31.77 854 840 168.5
B 7 220 257524 1670.8 826 808 153.6
B 0 197 56521 362.6 826 808 153.6
B 12 111 17321 107.47 826 808 153.6
C 14 238 127226 690.41 797 805 183.1
C 7 247 20090 105.32 797 805 183.1
C 3 233 6623 31.77 797 805 183.1
D 1 20 387137 1974.79 818 798 195.6
D 1 52 356132 1816.31 818 798 195.6
D 2 165 304756 1553.7 818 798 195.6

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