ASTROSAT CZTI

Data Quality Report

Orbit 35354

Creation date: 2022-04-13T10:13:40.091436
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/AS1A11_037T01_9000005066_35354cztM0_level2.evt modeM0/AS1A11_037T01_9000005066_35354cztM0_level2_quad_clean.evt
Size (bytes)525,574,08084,049,920
Size501.2 MB 80.2 MB
Events in quadrant A2,730,645556,661
Events in quadrant B3,271,367553,158
Events in quadrant C3,978,858536,219
Events in quadrant D5,533,891484,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120592
B0135951
C0157451
D0205761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A592950.084331%
B59291021.720358%
C59291672.816664%
D592962010.457075%

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 7241 5930 0 0 0.00% 0.00%
B 7241 5930 86 86 1.19% 1.45%
C 7241 5930 154 154 2.13% 2.60%
D 7241 5930 624 624 8.62% 10.52%

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 101630 735.21 675 662 137.3
A 13 254 9217 62.29 675 662 137.3
A 13 6 7070 46.66 675 662 137.3
B 5 172 290678 2266.3 665 648 128.0
B 5 236 251113 1957.14 665 648 128.0
B 4 232 36854 282.91 665 648 128.0
C 15 208 673793 4491.21 641 646 149.9
C 0 10 449441 2994.34 641 646 149.9
C 15 214 243598 1620.96 641 646 149.9
D 7 80 1733921 11392.85 618 599 152.1
D 8 195 481703 3162.22 618 599 152.1
D 2 152 345204 2265.03 618 599 152.1

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