ASTROSAT CZTI

Data Quality Report

Orbit 29718

Creation date: 2024-06-27T20:07:07.921071
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/AS1A10_007T01_9000004276_29718cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29718cztM0_level2_quad_clean.evt
Size (bytes)590,437,440101,067,840
Size563.1 MB 96.4 MB
Events in quadrant A3,300,448666,382
Events in quadrant B5,500,090675,334
Events in quadrant C4,422,927648,076
Events in quadrant D4,230,718629,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136782
B0202552
C0174333
D0168912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63171001.583030%
B63172433.846763%
C63162714.290690%
D63161171.852438%

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 7557 6317 0 0 0.00% 0.00%
B 7557 6317 26 26 0.34% 0.41%
C 7556 6316 29 29 0.38% 0.46%
D 7556 6316 35 35 0.46% 0.55%

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 13 254 12209 66.42 855 840 171.2
A 3 137 8056 42.16 855 840 171.2
A 0 226 7297 37.72 855 840 171.2
B 6 159 1906102 11869.5 850 831 160.5
B 0 229 177461 1100.37 850 831 160.5
B 10 245 52698 323.12 850 831 160.5
C 3 233 927813 4803.4 824 832 193.0
C 14 238 138654 714.16 824 832 193.0
C 7 247 64751 331.21 824 832 193.0
D 8 195 736916 3753.93 825 806 196.1
D 7 80 151516 768.57 825 806 196.1
D 13 172 64900 326.86 825 806 196.1

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