ASTROSAT CZTI

Data Quality Report

Orbit 06256

Creation date: 2024-06-27T15:04:49.032540
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_151T01_9000000818_06256cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06256cztM0_level2_quad_clean.evt
Size (bytes)509,172,48097,248,960
Size485.6 MB 92.7 MB
Events in quadrant A3,228,603623,623
Events in quadrant B3,304,428627,734
Events in quadrant C3,156,584615,137
Events in quadrant D5,239,294574,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148833
B0149232
C0148152
D0207292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7236490.677170%
B7236530.732449%
C7236260.359315%
D72364215.818132%

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 7741 7237 0 0 0.00% 0.00%
B 7741 7237 0 0 0.00% 0.00%
C 7741 7237 0 0 0.00% 0.00%
D 7741 7237 334 334 4.31% 4.62%

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 8 15 18585 104.08 830 811 170.8
A 0 226 8220 43.38 830 811 170.8
A 12 194 8013 42.17 830 811 170.8
B 15 204 17517 102.59 840 818 162.8
B 12 111 15772 91.87 840 818 162.8
B 11 111 12439 71.39 840 818 162.8
C 8 128 10684 52.92 802 804 186.7
C 9 54 9043 44.13 802 804 186.7
C 13 61 6416 30.06 802 804 186.7
D 12 220 1745815 9059.0 785 762 192.6
D 13 137 206017 1065.53 785 762 192.6
D 2 206 107945 556.41 785 762 192.6

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