ASTROSAT CZTI

Data Quality Report

Orbit 08772

Creation date: 2024-06-27T15:37:00.305393
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/AS1G07_010T01_9000001220_08772cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08772cztM0_level2_quad_clean.evt
Size (bytes)474,471,36097,416,000
Size452.5 MB 92.9 MB
Events in quadrant A3,564,882627,065
Events in quadrant B3,328,662633,501
Events in quadrant C3,270,963627,476
Events in quadrant D3,759,249604,728

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148043
B0141402
C0140282
D0154512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65571362.074119%
B65571522.318133%
C65571352.058868%
D65571552.363886%

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 9132 6557 0 0 0.00% 0.00%
B 9132 6557 14 14 0.15% 0.21%
C 9132 6557 4 4 0.04% 0.06%
D 9132 6557 38 38 0.42% 0.58%

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 8 5 267402 1568.3 842 825 170.0
A 13 251 31815 182.31 842 825 170.0
A 13 248 29281 167.41 842 825 170.0
B 10 16 53827 333.26 839 818 159.1
B 12 111 17431 104.44 839 818 159.1
B 4 173 14248 84.43 839 818 159.1
C 9 68 28966 146.33 827 829 192.3
C 14 234 10979 52.78 827 829 192.3
C 13 61 6106 27.44 827 829 192.3
D 2 152 315885 1569.93 822 803 200.7
D 2 16 88629 437.6 822 803 200.7
D 1 52 84122 415.15 822 803 200.7

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