ASTROSAT CZTI

Data Quality Report

Orbit 09802

Creation date: 2024-06-27T15:50:50.378752
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/AS1G05_218T01_9000001394_09802cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09802cztM0_level2_quad_clean.evt
Size (bytes)556,323,84078,863,040
Size530.6 MB 75.2 MB
Events in quadrant A3,310,924481,889
Events in quadrant B3,402,493487,767
Events in quadrant C3,238,177472,351
Events in quadrant D6,412,582448,931

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01482
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01468578
B01480397
C01469281
D024105179

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71371291.807482%
B71291131.585075%
C7135861.205326%
D71266408.981196%

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 7640 7166 0 0 0.00% 0.00%
B 7640 7169 1 1 0.01% 0.01%
C 7640 7162 1 1 0.01% 0.01%
D 7640 7160 414 414 5.42% 5.78%

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 0 226 7810 39.91 858 839 174.6
A 12 194 6934 34.9 858 839 174.6
A 13 253 5897 28.96 858 839 174.6
B 0 214 36419 213.82 855 835 166.4
B 4 173 23639 137.03 855 835 166.4
B 12 111 19499 112.15 855 835 166.4
C 14 234 7534 35.01 824 828 191.5
C 13 61 6118 27.62 824 828 191.5
C 9 237 5994 26.97 824 828 191.5
D 1 52 2901552 13967.62 800 783 207.7
D 9 85 145865 698.59 800 783 207.7
D 2 152 132373 633.62 800 783 207.7

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