ASTROSAT CZTI

Data Quality Report

Orbit 35625

Creation date: 2022-05-06T11:55:30.963683
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/AS1T05_028T01_9000005100_35625cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35625cztM0_level2_quad_clean.evt
Size (bytes)423,218,88083,229,120
Size403.6 MB 79.4 MB
Events in quadrant A2,403,260559,206
Events in quadrant B4,208,611545,905
Events in quadrant C2,982,692547,475
Events in quadrant D2,892,463526,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101423
B0156462
C0116152
D0117202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486360.123381%
B486350110.302283%
C48631964.030434%
D48631102.261978%

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 7015 4864 0 0 0.00% 0.00%
B 7015 4864 353 353 5.03% 7.26%
C 7015 4864 155 155 2.21% 3.19%
D 7015 4864 97 97 1.38% 1.99%

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 10 83 131448 1125.77 581 572 116.3
A 15 169 17971 149.66 581 572 116.3
A 13 6 8244 65.99 581 572 116.3
B 5 172 1860349 17439.59 562 549 106.6
B 0 189 42525 393.61 562 549 106.6
B 0 245 37978 350.98 562 549 106.6
C 0 10 571784 4354.16 564 571 131.2
C 15 214 197228 1499.05 564 571 131.2
C 12 249 6281 43.53 564 571 131.2
D 7 80 407170 2955.6 566 551 137.6
D 13 249 65745 473.87 566 551 137.6
D 12 233 65379 471.21 566 551 137.6

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