ASTROSAT CZTI

Data Quality Report

Orbit 41761

Creation date: 2024-06-27T22:32:31.336593
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_077T11_9000005696_41761cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41761cztM0_level2_quad_clean.evt
Size (bytes)331,511,04063,426,240
Size316.2 MB 60.5 MB
Events in quadrant A2,520,775441,066
Events in quadrant B1,793,159456,862
Events in quadrant C2,265,351415,663
Events in quadrant D5,379,186323,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099731
B081131
C089881
D0188051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4016421.045817%
B401670.174303%
C40161152.863546%
D401686621.563745%

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 4016 4016 32 32 0.80% 0.80%
B 4016 4016 1 1 0.02% 0.02%
C 4015 4015 113 113 2.81% 2.81%
D 4015 4015 936 936 23.31% 23.31%

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 348288 3727.3 449 440 93.3
A 6 10 188814 2018.49 449 440 93.3
A 13 248 146649 1566.67 449 440 93.3
B 0 245 20356 225.73 444 432 88.3
B 12 111 11055 120.35 444 432 88.3
B 11 111 10487 113.92 444 432 88.3
C 0 10 422546 4180.31 427 428 101.0
C 15 214 172776 1706.79 427 428 101.0
C 13 61 2811 23.6 427 428 101.0
D 12 79 2927044 28511.12 404 390 102.6
D 2 249 470594 4580.67 404 390 102.6
D 12 6 205310 1996.31 404 390 102.6

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