ASTROSAT CZTI

Data Quality Report

Orbit 34749

Creation date: 2022-03-03T11:56:07.027573
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/AS1A10_094T37_9000004986_34749cztM0_level2.evt modeM0/AS1A10_094T37_9000004986_34749cztM0_level2_quad_clean.evt
Size (bytes)300,072,96061,606,080
Size286.2 MB 58.8 MB
Events in quadrant A1,674,352412,743
Events in quadrant B1,947,648412,701
Events in quadrant C1,704,351407,556
Events in quadrant D3,513,445375,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076061
B082591
C074391
D0129511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3633150.412882%
B3633521.431324%
C3633110.302780%
D36332697.404349%

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 3633 3633 12 12 0.33% 0.33%
B 3633 3633 36 36 0.99% 0.99%
C 3633 3633 8 8 0.22% 0.22%
D 3633 3633 265 265 7.29% 7.29%

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 9 143 29516 361.84 394 387 80.5
A 10 83 28880 353.94 394 387 80.5
A 15 174 26755 327.55 394 387 80.5
B 5 172 164844 2173.52 393 383 75.7
B 5 255 97938 1289.29 393 383 75.7
B 0 190 42806 560.66 393 383 75.7
C 15 214 155521 1721.82 379 380 90.1
C 0 10 42554 468.06 379 380 90.1
C 14 67 14232 153.74 379 380 90.1
D 8 195 747837 7471.38 364 356 100.0
D 1 52 304721 3042.26 364 356 100.0
D 2 250 267701 2672.22 364 356 100.0

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