ASTROSAT CZTI

Data Quality Report

Orbit 39668

Creation date: 2024-06-27T22:07:32.130101
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_051T01_9000005490_39668cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39668cztM0_level2_quad_clean.evt
Size (bytes)490,881,60091,304,640
Size468.1 MB 87.1 MB
Events in quadrant A5,153,676599,379
Events in quadrant B3,173,488649,032
Events in quadrant C5,620,464569,953
Events in quadrant D3,769,484538,080

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194613
B0134732
C0206482
D0154052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58445509.411362%
B58441302.224504%
C584465011.122519%
D58444076.964408%

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 7307 5845 322 322 4.41% 5.51%
B 7307 5845 85 85 1.16% 1.45%
C 7307 5845 577 577 7.90% 9.87%
D 7307 5845 387 387 5.30% 6.62%

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 15 174 1509811 11894.04 620 608 126.9
A 15 222 602323 4742.12 620 608 126.9
A 10 83 471851 3713.87 620 608 126.9
B 5 172 440325 3603.28 630 611 122.0
B 5 255 128419 1047.34 630 611 122.0
B 4 170 61949 502.64 630 611 122.0
C 15 208 2701452 19197.05 600 603 140.7
C 15 214 250457 1775.9 600 603 140.7
C 9 187 242405 1718.67 600 603 140.7
D 12 227 1098623 7680.28 586 570 143.0
D 13 249 256220 1788.13 586 570 143.0
D 13 174 49636 343.19 586 570 143.0

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