ASTROSAT CZTI

Data Quality Report

Orbit 33026

Creation date: 2024-06-27T20:44:24.815004
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_080T01_9000004756_33026cztM0_level2.evt modeM0/AS1A11_080T01_9000004756_33026cztM0_level2_quad_clean.evt
Size (bytes)2,035,255,680233,213,760
Size1.9 GB 222.4 MB
Events in quadrant A7,393,7821,644,004
Events in quadrant B11,767,1191,566,710
Events in quadrant C16,074,3121,486,383
Events in quadrant D25,354,9871,285,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320345
B0448044
C0583504
D0862104

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15628620.396724%
B1562812157.774507%
C15628294518.844382%
D15628537334.380599%

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 19777 15631 28 28 0.14% 0.18%
B 19777 15631 874 874 4.42% 5.59%
C 19777 15631 2145 2145 10.85% 13.72%
D 19777 15631 5248 5248 26.54% 33.57%

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 15 169 168764 452.94 1837 1804 368.6
A 7 16 60107 158.17 1837 1804 368.6
A 13 6 37117 95.8 1837 1804 368.6
B 5 172 2895534 8584.89 1771 1730 337.1
B 5 31 793743 2349.62 1771 1730 337.1
B 0 189 354689 1047.1 1771 1730 337.1
C 7 221 9137934 24567.43 1609 1629 371.9
C 0 10 495250 1327.34 1609 1629 371.9
C 1 241 74243 195.26 1609 1629 371.9
D 7 223 11442947 28092.33 1560 1532 407.3
D 8 195 4339783 10651.79 1560 1532 407.3
D 2 250 1710428 4195.89 1560 1532 407.3

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