ASTROSAT CZTI

Data Quality Report

Orbit 04470

Creation date: 2024-06-27T14:42:27.285307
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/AS1G05_253T01_9000000560_04470cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04470cztM0_level2_quad_clean.evt
Size (bytes)1,018,206,720156,395,520
Size971.0 MB 149.2 MB
Events in quadrant A7,573,555933,582
Events in quadrant B7,222,165938,235
Events in quadrant C7,207,441944,699
Events in quadrant D7,839,279905,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328613
B0316843
C0317063
D0337683

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146972972.020821%
B146971611.095462%
C146971110.755256%
D146971931.313193%

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 17872 14700 191 191 1.07% 1.30%
B 17872 14700 36 36 0.20% 0.24%
C 17872 14700 49 49 0.27% 0.33%
D 17872 14700 129 129 0.72% 0.88%

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 13 1061112 3123.71 1654 1614 339.2
A 15 234 48495 138.22 1654 1614 339.2
A 0 50 40617 114.99 1654 1614 339.2
B 8 3 253217 776.69 1687 1646 323.9
B 4 48 240518 737.48 1687 1646 323.9
B 15 204 71541 215.79 1687 1646 323.9
C 14 48 604559 1599.49 1629 1635 376.9
C 9 16 132928 348.3 1629 1635 376.9
C 9 247 83088 216.09 1629 1635 376.9
D 13 235 811096 2107.92 1609 1565 384.0
D 12 79 561713 1458.56 1609 1565 384.0
D 2 136 72694 185.21 1609 1565 384.0

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