ASTROSAT CZTI

Data Quality Report

Orbit 00766

Creation date: 2024-06-27T14:02:38.708724
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/AS1P01_010T01_9000000108_00766cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00766cztM0_level2_quad_clean.evt
Size (bytes)1,070,075,52098,527,680
Size1020.5 MB 94.0 MB
Events in quadrant A9,096,013640,926
Events in quadrant B7,815,093666,913
Events in quadrant C7,243,249638,772
Events in quadrant D7,839,333601,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314940
B0276470
C0260060
D0277800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62403145.032051%
B6240450.721154%
C6240250.400641%
D62403956.330128%

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 7520 6241 978 978 13.01% 15.67%
B 7520 6241 269 269 3.58% 4.31%
C 7520 6241 167 167 2.22% 2.68%
D 7520 6241 609 609 8.10% 9.76%

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 0 117 1722294 3872.49 1851 1871 444.3
A 15 249 170680 379.97 1851 1871 444.3
A 15 17 47585 102.9 1851 1871 444.3
B 5 171 176723 378.71 1974 1980 461.4
B 0 220 67046 141.02 1974 1980 461.4
B 0 23 29578 59.81 1974 1980 461.4
C 10 17 199111 405.84 1756 1814 486.1
C 9 83 89158 179.67 1756 1814 486.1
C 15 241 33482 65.14 1756 1814 486.1
D 2 53 475279 865.76 1733 1735 547.0
D 10 85 314926 572.59 1733 1735 547.0
D 1 4 86043 154.14 1733 1735 547.0

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