ASTROSAT CZTI

Data Quality Report

Orbit 35265

Creation date: 2022-04-06T21:49:59.954288
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/AS1A11_047T09_9000005054_35265cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35265cztM0_level2_quad_clean.evt
Size (bytes)653,483,52073,509,120
Size623.2 MB 70.1 MB
Events in quadrant A2,494,219512,465
Events in quadrant B7,769,112396,332
Events in quadrant C4,892,912485,585
Events in quadrant D4,280,309463,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106862
B0267251
C0178981
D0161851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524590.171592%
B5245196337.426120%
C52455149.799809%
D52453216.120114%

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 7038 5246 0 0 0.00% 0.00%
B 7038 5246 1545 1545 21.95% 29.45%
C 7038 5246 490 490 6.96% 9.34%
D 7038 5246 317 317 4.50% 6.04%

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 74665 590.53 620 608 125.4
A 13 6 14384 109.85 620 608 125.4
A 13 254 9982 74.75 620 608 125.4
B 5 236 4455609 45147.37 513 500 98.7
B 5 172 1077126 10910.36 513 500 98.7
B 4 232 166459 1681.8 513 500 98.7
C 0 10 1701540 12523.82 581 585 135.8
C 15 208 682252 5018.99 581 585 135.8
C 15 214 213263 1565.91 581 585 135.8
D 7 80 1137146 7818.25 591 574 145.4
D 2 249 232198 1593.29 591 574 145.4
D 10 118 164609 1128.36 591 574 145.4

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