ASTROSAT CZTI

Data Quality Report

Orbit 19901

Creation date: 2024-06-27T18:08:30.560130
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/AS1T03_118T01_9000002962_19901cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19901cztM0_level2_quad_clean.evt
Size (bytes)250,053,12033,073,920
Size238.5 MB 31.5 MB
Events in quadrant A1,554,365208,702
Events in quadrant B1,610,789211,260
Events in quadrant C2,087,724190,117
Events in quadrant D2,124,451186,861

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064461
B065841
C082571
D081031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2853200.701016%
B2853160.560813%
C28531736.063792%
D28531485.187522%

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 2853 2853 4 4 0.14% 0.14%
B 2853 2853 6 6 0.21% 0.21%
C 2853 2853 84 84 2.94% 2.94%
D 2853 2853 149 149 5.22% 5.22%

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 5 16 32820 407.13 393 387 79.7
A 14 238 5181 60.18 393 387 79.7
A 0 226 3496 39.03 393 387 79.7
B 7 220 37605 499.49 395 387 74.5
B 0 190 9628 124.02 395 387 74.5
B 12 111 8361 107.02 395 387 74.5
C 9 221 566592 6483.56 374 376 87.3
C 14 238 60203 685.06 374 376 87.3
C 13 61 2675 26.33 374 376 87.3
D 1 52 388980 4250.7 375 366 91.4
D 12 218 225909 2467.01 375 366 91.4
D 2 120 60859 661.68 375 366 91.4

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