ASTROSAT CZTI

Data Quality Report

Orbit 20856

Creation date: 2024-06-27T18:20:24.014735
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_160T01_9000003078_20856cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20856cztM0_level2_quad_clean.evt
Size (bytes)576,141,12096,497,280
Size549.5 MB 92.0 MB
Events in quadrant A3,235,351646,157
Events in quadrant B3,330,718659,962
Events in quadrant C3,277,423600,413
Events in quadrant D7,183,565580,760

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132872
B0135522
C0133952
D0257572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6237500.801667%
B6237751.202501%
C62371101.763668%
D62373705.932339%

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 7482 6238 0 0 0.00% 0.00%
B 7482 6238 0 0 0.00% 0.00%
C 7482 6238 21 21 0.28% 0.34%
D 7482 6238 243 243 3.25% 3.90%

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 7366 38.78 840 825 168.7
A 3 137 6464 33.43 840 825 168.7
A 12 194 5953 30.4 840 825 168.7
B 0 219 28189 174.06 833 814 157.3
B 0 189 26757 164.96 833 814 157.3
B 12 111 18276 111.03 833 814 157.3
C 14 238 125111 685.12 784 790 181.5
C 0 10 72336 394.28 784 790 181.5
C 7 220 9301 46.9 784 790 181.5
D 1 239 3365320 17676.31 791 770 190.3
D 9 1 651726 3419.92 791 770 190.3
D 1 52 102354 533.69 791 770 190.3

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