ASTROSAT CZTI

Data Quality Report

Orbit 39039

Creation date: 2024-06-27T21:59:14.557065
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/AS1A12_077T06_9000005426_39039cztM0_level2.fits modeM0/AS1A12_077T06_9000005426_39039cztM0_level2_quad_clean.evt
Size (bytes)497,926,08085,334,400
Size474.9 MB 81.4 MB
Events in quadrant A10,132,662365,814
Events in quadrant B2,599,612658,399
Events in quadrant C2,631,934620,154
Events in quadrant D2,663,138575,340

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337083
B0109472
C0107962
D0112922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5199263650.702058%
B5199260.500096%
C519960.115407%
D5199370.711675%

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 7082 5200 2606 2606 36.80% 50.12%
B 7082 5200 6 6 0.08% 0.12%
C 7082 5200 2 2 0.03% 0.04%
D 7082 5200 34 34 0.48% 0.65%

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 15 222 7851936 80140.07 489 481 98.0
A 10 83 339039 3455.67 489 481 98.0
A 13 248 22908 228.91 489 481 98.0
B 5 184 90759 772.48 613 598 116.7
B 5 172 35504 299.07 613 598 116.7
B 15 85 28049 235.19 613 598 116.7
C 15 214 219380 1556.93 604 609 140.5
C 15 159 27189 189.16 604 609 140.5
C 1 128 9290 61.78 604 609 140.5
D 2 249 113702 760.76 607 590 148.7
D 13 171 63583 423.68 607 590 148.7
D 13 249 46649 309.78 607 590 148.7

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