ASTROSAT CZTI

Data Quality Report

Orbit 28925

Creation date: 2024-06-27T19:58:01.569369
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_048T07_9000004148_28925cztM0_level2.evt modeM0/AS1A10_048T07_9000004148_28925cztM0_level2_quad_clean.evt
Size (bytes)696,461,76087,733,440
Size664.2 MB 83.7 MB
Events in quadrant A3,462,276552,767
Events in quadrant B3,393,441569,942
Events in quadrant C7,384,157524,905
Events in quadrant D6,382,092524,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146721
B0143951
C0269351
D0238143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69481281.842257%
B69491432.057850%
C6949137819.830191%
D69484526.505469%

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 7213 6949 0 0 0.00% 0.00%
B 7214 6950 1 1 0.01% 0.01%
C 7214 6950 771 771 10.69% 11.09%
D 7213 6949 370 370 5.13% 5.32%

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 4 2 141383 804.35 854 834 174.7
A 13 254 12040 64.13 854 834 174.7
A 6 16 11887 63.26 854 834 174.7
B 15 33 27651 163.77 846 824 163.8
B 10 245 24247 142.99 846 824 163.8
B 12 111 20583 120.62 846 824 163.8
C 3 233 4186495 22691.51 781 785 184.5
C 14 238 127519 687.05 781 785 184.5
C 2 114 15658 80.63 781 785 184.5
D 8 195 2922736 14874.18 816 795 196.4
D 1 52 237878 1206.87 816 795 196.4
D 12 79 45571 227.93 816 795 196.4

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