ASTROSAT CZTI

Data Quality Report

Orbit 30056

Creation date: 2024-06-27T20:10:25.308352
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_071T07_9000004322_30056cztM0_level2.evt modeM0/AS1A10_071T07_9000004322_30056cztM0_level2_quad_clean.evt
Size (bytes)661,282,560104,656,320
Size630.6 MB 99.8 MB
Events in quadrant A4,049,334673,612
Events in quadrant B6,148,767668,908
Events in quadrant C4,621,289627,545
Events in quadrant D4,660,750638,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172732
B0247972
C0188393
D0189192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80683304.090233%
B80685146.370848%
C80686107.560734%
D80683143.891919%

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 8468 8070 0 0 0.00% 0.00%
B 8468 8070 2 2 0.02% 0.02%
C 8468 8070 96 96 1.13% 1.19%
D 8468 8070 52 52 0.61% 0.64%

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 14902 64.88 1046 1022 213.9
A 8 192 13529 58.46 1046 1022 213.9
A 3 137 11273 47.92 1046 1022 213.9
B 6 159 2138499 10602.87 1014 986 201.6
B 12 111 25596 122.07 1014 986 201.6
B 11 111 23955 113.93 1014 986 201.6
C 15 208 320648 1359.47 980 987 235.1
C 3 233 249799 1058.16 980 987 235.1
C 14 238 168716 713.33 980 987 235.1
D 13 104 349986 1445.24 1016 995 241.5
D 8 195 253589 1046.04 1016 995 241.5
D 7 223 107606 441.5 1016 995 241.5

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