ASTROSAT CZTI

Data Quality Report

Orbit 35701

Creation date: 2022-09-12T15:57:27.500190
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/AS1A09_142T03_9000005114_35701cztM0_level2.evt modeM0/AS1A09_142T03_9000005114_35701cztM0_level2_quad_clean.evt
Size (bytes)471,055,68085,769,280
Size449.2 MB 81.8 MB
Events in quadrant A3,037,633535,029
Events in quadrant B3,711,284543,304
Events in quadrant C3,417,981545,087
Events in quadrant D3,659,283522,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132443
B0151802
C0141062
D0153592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A647380.123590%
B6473741.143210%
C6473861.328596%
D64731392.147381%

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 9367 6475 0 0 0.00% 0.00%
B 9367 6475 43 43 0.46% 0.66%
C 9367 6475 68 68 0.73% 1.05%
D 9367 6475 124 124 1.32% 1.92%

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 10 83 157545 1052.29 741 728 149.0
A 3 137 7901 48.13 741 728 149.0
A 10 255 6337 37.64 741 728 149.0
B 5 172 439489 3103.35 734 713 141.4
B 10 244 309559 2184.39 734 713 141.4
B 5 255 35927 249.06 734 713 141.4
C 0 10 278713 1634.52 728 733 170.1
C 15 214 271422 1591.65 728 733 170.1
C 0 207 30034 172.29 728 733 170.1
D 13 249 482893 2753.95 721 700 175.1
D 2 153 195880 1114.73 721 700 175.1
D 12 6 75600 427.78 721 700 175.1

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