ASTROSAT CZTI

Data Quality Report

Orbit 36728

Creation date: 2024-06-27T21:30:51.995002
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/AS1A11_101T01_9000005238_36728cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36728cztM0_level2_quad_clean.evt
Size (bytes)474,022,08056,240,640
Size452.1 MB 53.6 MB
Events in quadrant A2,677,620337,830
Events in quadrant B3,067,916344,114
Events in quadrant C3,560,978326,307
Events in quadrant D4,669,374302,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113922
B0126301
C0139971
D0176641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559860.107181%
B5598561.000357%
C55982103.751340%
D55983536.305824%

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 7181 5599 1 1 0.01% 0.02%
B 7181 5599 40 40 0.56% 0.71%
C 7181 5599 165 165 2.30% 2.95%
D 7181 5599 357 357 4.97% 6.38%

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 192686 1487.52 639 627 129.1
A 13 254 11823 86.71 639 627 129.1
A 9 143 9546 69.08 639 627 129.1
B 0 189 134503 1090.48 632 615 122.8
B 0 221 91187 737.69 632 615 122.8
B 5 172 81234 656.62 632 615 122.8
C 14 254 569800 4031.79 605 608 141.2
C 0 10 361511 2556.4 605 608 141.2
C 15 214 244971 1730.91 605 608 141.2
D 1 20 1012824 6877.97 603 586 147.2
D 12 233 290156 1967.57 603 586 147.2
D 12 17 205755 1394.09 603 586 147.2

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