ASTROSAT CZTI

Data Quality Report

Orbit 45895

Creation date: 2024-06-27T23:17:26.633547
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_033T02_9000006140_45895cztM0_level2.fits modeM0/AS1A13_033T02_9000006140_45895cztM0_level2_quad_clean.evt
Size (bytes)596,695,680104,909,760
Size569.1 MB 100.0 MB
Events in quadrant A5,862,420742,737
Events in quadrant B5,908,121695,984
Events in quadrant C3,014,438747,966
Events in quadrant D6,794,187532,167

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217791
B0218441
C0136151
D0247841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65601542.347561%
B655996014.636377%
C6559330.503125%
D6560151023.018293%

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 7685 6560 4 4 0.05% 0.06%
B 7684 6559 472 472 6.14% 7.20%
C 7684 6560 3 3 0.04% 0.05%
D 7685 6561 1305 1305 16.98% 19.89%

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 2887778 18110.02 765 748 159.4
A 13 254 8957 51.49 765 748 159.4
A 3 137 8614 49.34 765 748 159.4
B 3 112 2836445 19678.25 731 710 144.1
B 4 171 79440 546.34 731 710 144.1
B 5 172 55872 382.79 731 710 144.1
C 0 239 33300 184.24 751 756 176.6
C 12 2 16287 87.93 751 756 176.6
C 12 250 16087 86.79 751 756 176.6
D 12 233 2984404 17844.51 664 644 167.2
D 12 2 534789 3194.48 664 644 167.2
D 13 249 301491 1799.23 664 644 167.2

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