ASTROSAT CZTI

Data Quality Report

Orbit 46657

Creation date: 2024-06-27T23:26:00.054415
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/AS1A13_039T01_9000006246_46657cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46657cztM0_level2_quad_clean.evt
Size (bytes)1,428,577,920294,016,320
Size1.3 GB 280.4 MB
Events in quadrant A17,589,8041,959,487
Events in quadrant B10,696,9821,980,738
Events in quadrant C8,605,0111,941,178
Events in quadrant D14,540,5951,726,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650063
B0443773
C0396133
D05616911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187735472.913759%
B187734672.487615%
C187741550.825610%
D1877211496.120818%

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 20128 18776 19 19 0.09% 0.10%
B 20128 18776 154 154 0.77% 0.82%
C 20129 18777 20 20 0.10% 0.11%
D 20129 18776 871 871 4.33% 4.64%

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 10 83 9545747 22714.66 2028 1982 420.2
A 0 243 45335 103.18 2028 1982 420.2
A 15 235 35941 80.82 2028 1982 420.2
B 0 189 695831 1771.76 2008 1944 391.6
B 5 32 606293 1543.14 2008 1944 391.6
B 10 128 480945 1223.08 2008 1944 391.6
C 1 3 319428 674.56 2003 2010 470.6
C 8 131 148672 311.68 2003 2010 470.6
C 12 249 117547 245.53 2003 2010 470.6
D 1 52 2366823 4792.88 1974 1913 493.4
D 12 128 2070317 4191.96 1974 1913 493.4
D 13 249 1523663 3084.08 1974 1913 493.4

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