ASTROSAT CZTI

Data Quality Report

Orbit 27116

Creation date: 2024-06-27T19:36:41.422129
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/AS1T03_244T01_9000003912_27116cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27116cztM0_level2_quad_clean.evt
Size (bytes)623,260,800106,303,680
Size594.4 MB 101.4 MB
Events in quadrant A4,311,250672,425
Events in quadrant B4,329,813684,260
Events in quadrant C4,032,729657,002
Events in quadrant D5,649,311639,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180320
B0179800
C0171250
D0224090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81422402.947679%
B81432533.106963%
C81432392.935036%
D81435757.061280%

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 8707 8144 55 55 0.63% 0.68%
B 8708 8145 3 3 0.03% 0.04%
C 8708 8145 5 5 0.06% 0.06%
D 8708 8145 430 430 4.94% 5.28%

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 14 235 396806 1948.71 1007 980 203.1
A 8 192 13812 63.17 1007 980 203.1
A 13 254 12381 56.13 1007 980 203.1
B 10 246 104457 532.19 1009 982 194.4
B 0 189 93536 476.02 1009 982 194.4
B 3 112 83536 424.59 1009 982 194.4
C 14 238 156319 667.02 983 987 232.9
C 15 208 40899 171.39 983 987 232.9
C 13 61 6739 24.7 983 987 232.9
D 1 52 1275960 5139.48 948 926 248.1
D 7 38 563451 2267.46 948 926 248.1
D 2 250 145081 581.07 948 926 248.1

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