ASTROSAT CZTI

Data Quality Report

Orbit 39706

Creation date: 2024-06-27T22:08:00.999771
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_022T01_9000005494_39706cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39706cztM0_level2_quad_clean.evt
Size (bytes)450,996,48099,380,160
Size430.1 MB 94.8 MB
Events in quadrant A5,203,201667,531
Events in quadrant B3,225,985710,153
Events in quadrant C4,445,272636,486
Events in quadrant D3,401,402617,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193713
B0129792
C0167882
D0135642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53953546.561631%
B53951011.872104%
C53953256.024096%
D5395911.686747%

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 7367 5396 238 238 3.23% 4.41%
B 7367 5396 54 54 0.73% 1.00%
C 7367 5396 285 285 3.87% 5.28%
D 7367 5396 80 80 1.09% 1.48%

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 1743840 13453.9 639 627 129.6
A 10 83 441332 3401.31 639 627 129.6
A 15 174 420923 3243.79 639 627 129.6
B 5 172 586371 4787.34 644 628 122.4
B 0 190 63688 515.4 644 628 122.4
B 5 255 31202 249.88 644 628 122.4
C 9 187 1251916 8782.43 620 626 142.5
C 15 208 512267 3591.06 620 626 142.5
C 15 214 218249 1527.43 620 626 142.5
D 12 227 367609 2371.77 636 618 154.7
D 12 233 193255 1244.96 636 618 154.7
D 2 153 149441 961.8 636 618 154.7

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