ASTROSAT CZTI

Data Quality Report

Orbit 19459

Creation date: 2024-06-27T18:03:09.438366
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/AS1A05_229T02_9000002890_19459cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19459cztM0_level2_quad_clean.evt
Size (bytes)613,321,92099,694,080
Size584.9 MB 95.1 MB
Events in quadrant A3,764,805636,632
Events in quadrant B3,805,900643,935
Events in quadrant C4,066,496621,902
Events in quadrant D6,420,925586,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161022
B0162692
C0167853
D0243572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7630821.074705%
B76311381.808413%
C76301712.241153%
D763082710.838794%

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 8250 7633 3 3 0.04% 0.04%
B 8251 7634 16 16 0.19% 0.21%
C 8250 7633 9 9 0.11% 0.12%
D 8250 7633 687 687 8.33% 9.00%

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 88478 461.25 931 913 189.8
A 11 29 43344 223.51 931 913 189.8
A 5 16 20078 100.95 931 913 189.8
B 7 220 45026 244.9 932 906 180.2
B 0 197 41153 223.4 932 906 180.2
B 3 64 31480 169.71 932 906 180.2
C 9 221 253649 1201.07 895 901 210.4
C 14 238 139411 658.21 895 901 210.4
C 3 233 108349 510.6 895 901 210.4
D 1 52 3030819 14573.01 858 831 207.9
D 5 222 42451 200.17 858 831 207.9
D 7 238 36979 173.85 858 831 207.9

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