ASTROSAT CZTI

Data Quality Report

Orbit 27655

Creation date: 2024-06-27T19:42:38.971195
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/AS1T03_257T01_9000003976_27655cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27655cztM0_level2_quad_clean.evt
Size (bytes)771,799,680134,778,240
Size736.0 MB 128.5 MB
Events in quadrant A4,563,110883,899
Events in quadrant B5,197,633893,636
Events in quadrant C4,549,763855,711
Events in quadrant D8,394,241763,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202110
B0218030
C0200090
D0315060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9885710.718260%
B98862182.205139%
C9886980.991301%
D9886118311.966417%

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 10410 9885 2 2 0.02% 0.02%
B 10411 9886 124 124 1.19% 1.25%
C 10411 9886 0 0 0.00% 0.00%
D 10411 9886 1036 1036 9.95% 10.48%

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 6 16 61561 259.41 1160 1135 232.9
A 13 254 17884 71.91 1160 1135 232.9
A 13 248 13111 51.41 1160 1135 232.9
B 15 222 357481 1630.91 1145 1113 218.5
B 10 245 143295 650.69 1145 1113 218.5
B 4 200 74517 335.93 1145 1113 218.5
C 14 238 178067 674.65 1116 1122 262.3
C 15 208 12657 43.98 1116 1122 262.3
C 2 16 10940 37.43 1116 1122 262.3
D 1 52 3450671 13524.63 1062 1033 255.1
D 7 80 688341 2694.66 1062 1033 255.1
D 2 250 166344 648.12 1062 1033 255.1

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