ASTROSAT CZTI

Data Quality Report

Orbit 36469

Creation date: 2024-06-27T21:27:15.786843
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_049T02_9000005206_36469cztM0_level2.evt modeM0/AS1A11_049T02_9000005206_36469cztM0_level2_quad_clean.evt
Size (bytes)466,009,92073,013,760
Size444.4 MB 69.6 MB
Events in quadrant A2,851,168460,810
Events in quadrant B3,433,765453,249
Events in quadrant C3,198,208443,423
Events in quadrant D4,221,252433,047

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124133
B0142722
C0132592
D0165932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A601930.049842%
B6019941.561721%
C6019961.594949%
D60194096.795149%

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 7300 6020 0 0 0.00% 0.00%
B 7300 6020 53 53 0.73% 0.88%
C 7300 6020 89 89 1.22% 1.48%
D 7300 6020 417 417 5.71% 6.93%

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 202874 1472.89 679 666 137.3
A 13 254 11020 75.42 679 666 137.3
A 3 137 7331 48.55 679 666 137.3
B 5 172 298546 2292.86 669 652 129.9
B 5 255 171359 1313.92 669 652 129.9
B 0 189 145257 1113.01 669 652 129.9
C 15 214 257040 1684.5 650 653 152.2
C 0 10 194930 1276.43 650 653 152.2
C 6 255 122759 802.25 650 653 152.2
D 1 20 954400 6006.37 644 626 158.8
D 12 6 169914 1066.09 644 626 158.8
D 10 118 100742 630.48 644 626 158.8

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