ASTROSAT CZTI

Data Quality Report

Orbit 46368

Creation date: 2024-06-27T23:22:17.946654
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_068T02_9000006200_46368cztM0_level2.fits modeM0/AS1A13_068T02_9000006200_46368cztM0_level2_quad_clean.evt
Size (bytes)496,549,440109,828,800
Size473.5 MB 104.7 MB
Events in quadrant A6,282,703719,434
Events in quadrant B3,538,594742,472
Events in quadrant C3,574,818727,348
Events in quadrant D4,445,351652,239

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230652
B0153502
C0155883
D0181832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69482002.878526%
B69481942.792170%
C6947600.863682%
D69473124.491147%

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 7838 6949 6 6 0.08% 0.09%
B 7838 6949 76 76 0.97% 1.09%
C 7837 6948 21 21 0.27% 0.30%
D 7837 6948 213 213 2.72% 3.07%

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 3257537 20050.11 772 754 162.4
A 13 248 17901 105.56 772 754 162.4
A 14 235 12723 73.69 772 754 162.4
B 15 201 173197 1105.37 777 754 156.0
B 5 172 118217 752.94 777 754 156.0
B 5 32 59863 378.89 777 754 156.0
C 14 254 562186 3083.06 766 771 182.1
C 3 233 11401 58.38 766 771 182.1
C 2 14 7118 34.86 766 771 182.1
D 5 235 464168 2445.03 754 732 189.5
D 1 52 455039 2396.87 754 732 189.5
D 13 249 229512 1207.02 754 732 189.5

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