ASTROSAT CZTI

Data Quality Report

Orbit 07405

Creation date: 2024-06-27T15:19:26.372869
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/AS1G06_087T02_9000001016_07405cztM0_level2.evt modeM0/AS1G06_087T02_9000001016_07405cztM0_level2_quad_clean.evt
Size (bytes)1,218,899,520217,465,920
Size1.1 GB 207.4 MB
Events in quadrant A8,414,8351,326,125
Events in quadrant B8,802,5791,355,360
Events in quadrant C8,364,4421,350,768
Events in quadrant D10,067,6151,265,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039721
B039614
C039616
D039622

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397781680
B0402101634
C0398761669
D0451571826

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178
B0166
C0178
D0144

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186762301.231527%
B186942291.224992%
C186931150.615204%
D186826123.275881%

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 21281 18963 2 2 0.01% 0.01%
B 21281 18979 8 8 0.04% 0.04%
C 21281 18968 16 16 0.08% 0.08%
D 21281 18971 429 429 2.02% 2.26%

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 3 1 73726 161.03 2162 2110 444.7
A 0 226 21167 42.85 2162 2110 444.7
A 12 194 19206 38.44 2162 2110 444.7
B 0 214 239184 566.44 2181 2125 418.5
B 12 111 42977 97.61 2181 2125 418.5
B 4 170 41992 95.26 2181 2125 418.5
C 1 16 67120 132.66 2101 2105 490.1
C 8 128 32952 62.94 2101 2105 490.1
C 9 68 27228 51.26 2101 2105 490.1
D 15 47 894223 1744.41 2076 2009 511.5
D 14 34 341958 664.65 2076 2009 511.5
D 12 233 271338 526.58 2076 2009 511.5

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