ASTROSAT CZTI

Data Quality Report

Orbit 12828

Creation date: 2024-06-27T16:32:51.156302
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/AS1G08_071T01_9000001888_12828cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12828cztM0_level2_quad_clean.evt
Size (bytes)612,832,320102,159,360
Size584.4 MB 97.4 MB
Events in quadrant A3,765,325657,552
Events in quadrant B6,582,893582,962
Events in quadrant C3,667,641662,112
Events in quadrant D4,006,566640,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165283
B0249572
C0164062
D0175672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7919801.010229%
B7919130316.454098%
C7919680.858694%
D7919931.174391%

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 8810 7923 0 0 0.00% 0.00%
B 8810 7923 860 860 9.76% 10.85%
C 8810 7923 0 0 0.00% 0.00%
D 8810 7923 22 22 0.25% 0.28%

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 12 189 66827 335.65 959 936 196.3
A 15 222 12255 57.66 959 936 196.3
A 0 226 8524 38.65 959 936 196.3
B 4 239 2818717 16896.16 875 854 166.8
B 0 219 170454 1016.94 875 854 166.8
B 3 209 67547 399.9 875 854 166.8
C 14 234 9807 40.83 937 943 217.1
C 13 61 6815 27.05 937 943 217.1
C 3 233 3323 10.96 937 943 217.1
D 1 52 241971 997.84 925 901 241.6
D 2 136 97603 400.27 925 901 241.6
D 13 172 91411 374.64 925 901 241.6

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