ASTROSAT CZTI

Data Quality Report

Orbit 07796

Creation date: 2024-06-27T15:24:05.775604
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_132T01_9000001072_07796cztM0_level2.evt modeM0/AS1A02_132T01_9000001072_07796cztM0_level2_quad_clean.evt
Size (bytes)1,012,325,760172,851,840
Size965.4 MB 164.8 MB
Events in quadrant A6,777,8221,054,307
Events in quadrant B7,229,2311,069,065
Events in quadrant C7,494,1431,060,478
Events in quadrant D8,143,5351,017,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307238
B0314408
C0327856
D0348069

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149632451.637372%
B149632541.697521%
C149653472.318744%
D149633082.058411%

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 15606 14966 0 0 0.00% 0.00%
B 15606 14966 8 8 0.05% 0.05%
C 15606 14966 141 141 0.90% 0.94%
D 15606 14966 99 99 0.63% 0.66%

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 16635 41.35 1757 1718 360.7
A 12 194 15215 37.42 1757 1718 360.7
A 13 254 7148 15.05 1757 1718 360.7
B 4 239 116786 337.18 1773 1731 341.2
B 0 214 66691 190.37 1773 1731 341.2
B 0 213 33965 94.46 1773 1731 341.2
C 4 254 436727 1085.25 1717 1725 400.8
C 9 68 308660 765.75 1717 1725 400.8
C 1 16 22269 51.25 1717 1725 400.8
D 2 152 1057723 2516.24 1711 1660 419.7
D 13 104 240008 567.9 1711 1660 419.7
D 2 14 135778 319.56 1711 1660 419.7

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