ASTROSAT CZTI

Data Quality Report

Orbit 06912

Creation date: 2024-06-27T15:13:00.882218
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/AS1A02_005T01_9000000948_06912cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06912cztM0_level2_quad_clean.evt
Size (bytes)1,122,992,640215,712,000
Size1.0 GB 205.7 MB
Events in quadrant A7,865,8671,330,400
Events in quadrant B8,326,1841,349,386
Events in quadrant C7,866,9031,343,209
Events in quadrant D8,750,9691,288,363

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361265
B0369664
C0361844
D0389684

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177201240.699774%
B177201690.953725%
C177201120.632054%
D177201801.015801%

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 19380 17724 0 0 0.00% 0.00%
B 19380 17724 8 8 0.04% 0.05%
C 19380 17724 0 0 0.00% 0.00%
D 19380 17724 86 86 0.44% 0.49%

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 0 23 33487 76.76 2016 1973 410.6
A 13 14 22798 50.72 2016 1973 410.6
A 4 2 22008 48.8 2016 1973 410.6
B 4 80 132962 340.33 2031 1984 384.9
B 4 173 130734 334.54 2031 1984 384.9
B 15 204 72667 183.66 2031 1984 384.9
C 9 247 135340 295.21 1958 1963 451.8
C 8 128 24172 49.16 1958 1963 451.8
C 9 16 20578 41.2 1958 1963 451.8
D 1 20 390249 814.67 1956 1896 476.7
D 2 216 351230 732.81 1956 1896 476.7
D 2 136 267846 557.9 1956 1896 476.7

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