ASTROSAT CZTI

Data Quality Report

Orbit 23157

Creation date: 2024-06-27T18:50:38.907164
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/AS1A08_009T01_9000003422_23157cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23157cztM0_level2_quad_clean.evt
Size (bytes)567,432,00071,919,360
Size541.1 MB 68.6 MB
Events in quadrant A3,209,473457,114
Events in quadrant B3,284,710461,866
Events in quadrant C3,424,179448,751
Events in quadrant D6,834,878365,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137991
B0140001
C0143922
D0248501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6364390.612822%
B6365410.644148%
C63641111.744186%
D6364104416.404777%

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 7594 6365 0 0 0.00% 0.00%
B 7595 6365 1 1 0.01% 0.02%
C 7594 6364 3 3 0.04% 0.05%
D 7594 6365 951 951 12.52% 14.94%

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 6 16 12832 74.32 829 813 161.7
A 13 254 8738 49.0 829 813 161.7
A 0 226 7312 40.19 829 813 161.7
B 0 190 33048 208.96 827 808 154.3
B 12 111 17715 109.58 827 808 154.3
B 11 111 15782 97.05 827 808 154.3
C 14 238 129744 695.21 803 809 185.5
C 0 10 69180 368.65 803 809 185.5
C 7 247 57774 307.15 803 809 185.5
D 1 239 2725206 15023.25 755 733 181.4
D 1 52 706656 3892.59 755 733 181.4
D 12 233 299006 1644.73 755 733 181.4

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