ASTROSAT CZTI

Data Quality Report

Orbit 41459

Creation date: 2024-06-27T22:29:19.437389
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_100T01_9000005668_41459cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41459cztM0_level2_quad_clean.evt
Size (bytes)329,106,24087,249,600
Size313.9 MB 83.2 MB
Events in quadrant A2,732,058601,094
Events in quadrant B2,401,984621,836
Events in quadrant C3,014,176556,575
Events in quadrant D3,642,021509,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110913
B0104742
C0119882
D0142712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5031110.218644%
B5031160.318028%
C50312585.128205%
D50313296.539455%

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 7034 5032 5 5 0.07% 0.10%
B 7034 5032 4 4 0.06% 0.08%
C 7034 5032 254 254 3.61% 5.05%
D 7034 5032 292 292 4.15% 5.80%

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 490257 4229.72 571 561 115.8
A 13 248 22100 186.04 571 561 115.8
A 13 254 8205 66.02 571 561 115.8
B 0 190 136242 1233.43 572 557 110.0
B 12 111 13828 120.64 572 557 110.0
B 11 111 12482 108.4 572 557 110.0
C 0 10 706096 5590.55 539 544 126.2
C 15 214 204385 1615.17 539 544 126.2
C 12 249 4485 31.23 539 544 126.2
D 13 249 758091 5749.72 538 523 131.8
D 12 233 296620 2247.29 538 523 131.8
D 2 249 243057 1840.76 538 523 131.8

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