ASTROSAT CZTI

Data Quality Report

Orbit 10339

Creation date: 2024-06-27T15:58:07.675815
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/AS1C02_038T02_9000001490_10339cztM0_level2.evt modeM0/AS1C02_038T02_9000001490_10339cztM0_level2_quad_clean.evt
Size (bytes)500,215,68082,183,680
Size477.0 MB 78.4 MB
Events in quadrant A3,943,188497,092
Events in quadrant B3,828,481499,482
Events in quadrant C3,273,179499,360
Events in quadrant D3,606,192482,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167502
B0161721
C0149904
D0157523

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73331512.059185%
B73332072.822856%
C7332480.654664%
D7332550.750136%

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 7518 7334 1 1 0.01% 0.01%
B 7518 7333 51 51 0.68% 0.70%
C 7518 7334 0 0 0.00% 0.00%
D 7518 7334 14 14 0.19% 0.19%

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 8 15 588859 3305.62 861 842 177.9
A 13 251 17806 95.37 861 842 177.9
A 15 174 15710 83.58 861 842 177.9
B 4 239 265601 1606.33 862 840 164.8
B 11 51 83182 499.58 862 840 164.8
B 0 219 66625 399.12 862 840 164.8
C 13 61 6280 28.08 838 842 193.7
C 14 234 3551 13.99 838 842 193.7
C 3 202 2070 6.34 838 842 193.7
D 8 195 143549 706.41 835 809 202.1
D 1 20 141657 697.05 835 809 202.1
D 2 14 45891 223.11 835 809 202.1

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