ASTROSAT CZTI

Data Quality Report

Orbit 01204

Creation date: 2024-06-27T14:09:06.378706
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/AS1G04_007T02_9000000220_01204cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01204cztM0_level2_quad_clean.evt
Size (bytes)1,075,628,16099,048,960
Size1.0 GB 94.5 MB
Events in quadrant A7,986,043652,453
Events in quadrant B8,402,980647,363
Events in quadrant C7,967,424626,148
Events in quadrant D7,784,490616,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283742
B0296421
C0283241
D0278031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554961.464754%
B65541021.556301%
C6554590.900214%
D65541261.922490%

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 7003 6553 336 336 4.80% 5.13%
B 7003 6553 380 380 5.43% 5.80%
C 7004 6554 284 284 4.05% 4.33%
D 7004 6554 388 388 5.54% 5.92%

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 12 243 30873 57.21 2072 2080 503.2
A 11 79 8492 12.74 2072 2080 503.2
A 3 111 6454 8.69 2072 2080 503.2
B 5 191 83305 159.83 2128 2137 507.8
B 6 53 64875 123.54 2128 2137 507.8
B 15 22 58668 111.31 2128 2137 507.8
C 15 241 348789 642.67 1925 1990 539.6
C 3 79 35599 62.28 1925 1990 539.6
C 3 111 28639 49.38 1925 1990 539.6
D 10 84 357907 597.13 1895 1962 596.1
D 1 83 140015 231.6 1895 1962 596.1
D 2 170 40143 64.05 1895 1962 596.1

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