ASTROSAT CZTI

Data Quality Report

Orbit 02495

Creation date: 2024-06-27T14:18:40.996244
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/AS1T01_046T01_9000000372_02495cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02495cztM0_level2_quad_clean.evt
Size (bytes)432,063,360122,702,400
Size412.0 MB 117.0 MB
Events in quadrant A4,045,592806,513
Events in quadrant B3,680,675829,925
Events in quadrant C3,595,732793,675
Events in quadrant D4,057,624737,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172993
B0166562
C0164632
D0179572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78833364.262337%
B78833304.186224%
C78832503.171381%
D78832783.526576%

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 8133 7885 0 0 0.00% 0.00%
B 8133 7885 1 1 0.01% 0.01%
C 8133 7885 0 0 0.00% 0.00%
D 8133 7885 45 45 0.55% 0.57%

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 8 15 284097 1481.73 927 902 191.1
A 12 133 195502 1018.18 927 902 191.1
A 12 194 10452 49.97 927 902 191.1
B 5 172 31836 169.5 938 910 182.5
B 7 205 25543 135.01 938 910 182.5
B 12 111 13156 67.12 938 910 182.5
C 8 112 33248 153.74 900 900 210.4
C 8 128 14617 65.19 900 900 210.4
C 10 65 13059 57.79 900 900 210.4
D 11 130 260057 1200.79 896 869 215.8
D 5 172 113411 521.39 896 869 215.8
D 13 238 89018 408.38 896 869 215.8

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