ASTROSAT CZTI

Data Quality Report

Orbit 40797

Creation date: 2024-06-27T22:20:39.532110
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/AS1A12_099T03_9000005570_40797cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40797cztM0_level2_quad_clean.evt
Size (bytes)58,703,04015,710,400
Size56.0 MB 15.0 MB
Events in quadrant A559,784103,097
Events in quadrant B604,728108,338
Events in quadrant C485,47599,982
Events in quadrant D445,58691,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022672
B024181
C019961
D020341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95260.630252%
B952212.205882%
C95250.525210%
D95270.735294%

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 952 952 2 2 0.21% 0.21%
B 952 952 9 9 0.95% 0.95%
C 952 952 4 4 0.42% 0.42%
D 952 952 3 3 0.32% 0.32%

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 146183 6078.42 106 103 24.0
A 12 189 1507 58.42 106 103 24.0
A 13 254 1335 51.26 106 103 24.0
B 5 255 179228 7912.69 106 103 22.6
B 0 190 5348 231.69 106 103 22.6
B 12 111 2684 114.01 106 103 22.6
C 15 214 46817 1759.02 105 105 26.6
C 0 10 26628 998.77 105 105 26.6
C 13 61 667 21.16 105 105 26.6
D 1 47 48456 1806.23 102 99 26.8
D 3 238 3272 118.52 102 99 26.8
D 2 234 3022 109.18 102 99 26.8

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