ASTROSAT CZTI

Data Quality Report

Orbit 19635

Creation date: 2024-06-27T18:05:01.470385
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/AS1A05_101T03_9000002920_19635cztM0_level2.evt modeM0/AS1A05_101T03_9000002920_19635cztM0_level2_quad_clean.evt
Size (bytes)655,248,960113,748,480
Size624.9 MB 108.5 MB
Events in quadrant A4,092,383729,346
Events in quadrant B4,437,190729,221
Events in quadrant C4,320,186699,370
Events in quadrant D6,397,668675,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179692
B0188842
C0182602
D0249222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8808961.089918%
B88081651.873297%
C88081401.589464%
D88083904.427793%

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 10078 8808 0 0 0.00% 0.00%
B 10078 8808 43 43 0.43% 0.49%
C 10078 8808 1 1 0.01% 0.01%
D 10078 8809 279 279 2.77% 3.17%

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 11 29 12279 52.36 1058 1033 214.8
A 13 254 9631 40.03 1058 1033 214.8
A 0 226 9138 37.74 1058 1033 214.8
B 7 220 224546 1098.62 1048 1019 203.5
B 3 112 39749 190.36 1048 1019 203.5
B 4 216 30731 146.03 1048 1019 203.5
C 3 233 170283 714.82 1010 1015 236.8
C 14 238 154892 649.82 1010 1015 236.8
C 5 112 32621 133.47 1010 1015 236.8
D 1 52 1697050 6825.26 1015 985 248.5
D 7 238 434888 1746.1 1015 985 248.5
D 1 20 255097 1022.59 1015 985 248.5

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