ASTROSAT CZTI

Data Quality Report

Orbit 07675

Creation date: 2024-06-27T15:22:35.259733
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/AS1A02_029T01_9000001058_07675cztM0_level2.evt modeM0/AS1A02_029T01_9000001058_07675cztM0_level2_quad_clean.evt
Size (bytes)945,293,76075,208,320
Size901.5 MB 71.7 MB
Events in quadrant A3,666,923477,653
Events in quadrant B3,976,733484,271
Events in quadrant C15,760,417326,456
Events in quadrant D4,702,714451,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161203
B0168472
C0519852
D0191382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77011872.428256%
B77012483.220361%
C7701576274.821452%
D77022873.726305%

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 7926 7702 0 0 0.00% 0.00%
B 7926 7702 33 33 0.42% 0.43%
C 7926 7701 4810 4810 60.69% 62.46%
D 7927 7703 134 134 1.69% 1.74%

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 0 226 9111 41.87 947 926 195.5
A 12 194 8441 38.45 947 926 195.5
A 3 1 7743 34.88 947 926 195.5
B 4 173 190546 1029.17 949 925 184.2
B 0 219 37969 201.06 949 925 184.2
B 0 214 33997 179.5 949 925 184.2
C 9 68 13389089 96860.49 590 593 138.2
C 8 208 62919 450.9 590 593 138.2
C 13 61 4475 28.08 590 593 138.2
D 2 152 618796 2756.96 914 888 224.1
D 12 0 168641 748.47 914 888 224.1
D 12 233 138945 615.98 914 888 224.1

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