ASTROSAT CZTI

Data Quality Report

Orbit 07274

Creation date: 2024-06-27T15:17:48.249138
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_155T01_9000000994_07274cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07274cztM0_level2_quad_clean.evt
Size (bytes)1,033,464,960179,660,160
Size985.6 MB 171.3 MB
Events in quadrant A7,230,6451,100,760
Events in quadrant B7,655,0271,115,122
Events in quadrant C6,973,9951,104,182
Events in quadrant D8,389,9841,051,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326291
B0330131
C0319091
D0360961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154953722.400774%
B154954182.697644%
C154953001.936108%
D154955243.381736%

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 15910 15496 6 6 0.04% 0.04%
B 15910 15496 68 68 0.43% 0.44%
C 15910 15496 1 1 0.01% 0.01%
D 15910 15496 172 172 1.08% 1.11%

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 14 111 174442 471.91 1791 1750 365.9
A 8 15 143738 388.0 1791 1750 365.9
A 0 226 17761 43.75 1791 1750 365.9
B 0 214 167657 474.84 1805 1759 349.4
B 10 245 156850 443.91 1805 1759 349.4
B 4 239 135407 382.53 1805 1759 349.4
C 14 38 52980 124.89 1758 1763 410.1
C 9 68 23763 53.65 1758 1763 410.1
C 7 247 19556 43.39 1758 1763 410.1
D 1 52 764508 1792.02 1748 1695 425.7
D 2 14 576422 1350.17 1748 1695 425.7
D 12 110 135082 313.36 1748 1695 425.7

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