ASTROSAT CZTI

Data Quality Report

Orbit 21012

Creation date: 2024-06-27T18:22:29.378741
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_225T02_9000003100_21012cztM0_level2.evt modeM0/AS1A05_225T02_9000003100_21012cztM0_level2_quad_clean.evt
Size (bytes)1,085,483,520203,428,800
Size1.0 GB 194.0 MB
Events in quadrant A6,575,7631,304,592
Events in quadrant B7,580,4411,335,907
Events in quadrant C6,779,0661,306,993
Events in quadrant D10,969,6131,223,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292933
B0322033
C0295693
D0424973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14343990.690232%
B143431951.359548%
C143431771.234051%
D1434312058.401311%

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 16918 14346 0 0 0.00% 0.00%
B 16918 14346 30 30 0.18% 0.21%
C 16918 14346 1 1 0.01% 0.01%
D 16918 14345 1051 1051 6.21% 7.33%

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 14888 38.48 1705 1666 343.6
A 3 137 14066 36.08 1705 1666 343.6
A 12 194 12245 30.79 1705 1666 343.6
B 7 220 277754 860.41 1708 1663 320.9
B 0 182 254220 787.06 1708 1663 320.9
B 0 189 92494 283.06 1708 1663 320.9
C 14 238 261114 679.89 1651 1662 381.6
C 9 54 71838 183.89 1651 1662 381.6
C 13 61 11609 26.07 1651 1662 381.6
D 1 52 1904731 4918.45 1613 1567 386.9
D 9 1 1143414 2950.94 1613 1567 386.9
D 2 16 708425 1826.77 1613 1567 386.9

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