ASTROSAT CZTI

Data Quality Report

Orbit 22024

Creation date: 2024-06-27T18:35:29.513597
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/AS1A07_091T07_9000003254_22024cztM0_level2.evt modeM0/AS1A07_091T07_9000003254_22024cztM0_level2_quad_clean.evt
Size (bytes)97,450,56029,047,680
Size92.9 MB 27.7 MB
Events in quadrant A680,017194,569
Events in quadrant B718,070197,135
Events in quadrant C683,437190,086
Events in quadrant D763,763185,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030801
B031461
C030851
D033742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151650.329815%
B151670.461741%
C151650.329815%
D1515352.310231%

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 1516 1516 0 0 0.00% 0.00%
B 1516 1516 0 0 0.00% 0.00%
C 1516 1516 0 0 0.00% 0.00%
D 1515 1515 35 35 2.31% 2.31%

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 13 254 2543 64.49 175 172 36.8
A 15 236 1692 41.35 175 172 36.8
A 0 226 1512 36.45 175 172 36.8
B 0 230 13686 372.02 177 172 36.3
B 4 216 6235 166.91 177 172 36.3
B 12 111 4195 110.75 177 172 36.3
C 14 238 26584 638.5 168 168 41.4
C 13 61 1177 24.39 168 168 41.4
C 7 247 404 5.7 168 168 41.4
D 1 52 105214 2498.66 165 160 42.0
D 2 136 14093 331.38 165 160 42.0
D 7 223 8174 190.6 165 160 42.0

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