ASTROSAT CZTI

Data Quality Report

Orbit 31051

Creation date: 2024-06-27T20:22:46.770691
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/AS1A10_071T69_9000004488_31051cztM0_level2.evt modeM0/AS1A10_071T69_9000004488_31051cztM0_level2_quad_clean.evt
Size (bytes)448,329,60057,240,000
Size427.6 MB 54.6 MB
Events in quadrant A2,466,889360,810
Events in quadrant B4,087,194359,860
Events in quadrant C2,724,307340,272
Events in quadrant D3,962,934324,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104151
B0154652
C0111321
D0150711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4963420.846262%
B49621643.305119%
C49621472.962515%
D49622986.005643%

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 6063 4963 0 0 0.00% 0.00%
B 6062 4963 25 25 0.41% 0.50%
C 6062 4963 16 16 0.26% 0.32%
D 6062 4963 263 263 4.34% 5.30%

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 13 254 8706 62.78 639 629 128.7
A 3 137 6439 45.16 639 629 128.7
A 0 226 5315 36.42 639 629 128.7
B 6 159 1433879 11772.84 630 613 121.7
B 4 80 105422 860.9 630 613 121.7
B 0 183 36646 295.97 630 613 121.7
C 14 238 99177 686.09 604 608 143.7
C 0 10 94196 651.42 604 608 143.7
C 3 233 76408 527.61 604 608 143.7
D 8 195 568036 4012.6 591 575 141.4
D 13 174 551056 3892.53 591 575 141.4
D 6 219 253047 1785.27 591 575 141.4

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