ASTROSAT CZTI

Data Quality Report

Orbit 39429

Creation date: 2024-06-27T22:04:26.937417
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_077T06_9000005474_39429cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39429cztM0_level2_quad_clean.evt
Size (bytes)515,162,88090,766,080
Size491.3 MB 86.6 MB
Events in quadrant A4,249,680640,306
Events in quadrant B2,584,528667,150
Events in quadrant C6,211,183517,111
Events in quadrant D5,586,309529,099

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164493
B0115872
C0221332
D0205232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56451172.072631%
B5645100.177148%
C5645118621.009743%
D564570412.471213%

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 9021 5647 73 73 0.81% 1.29%
B 9021 5647 0 0 0.00% 0.00%
C 9021 5647 1050 1050 11.64% 18.59%
D 9021 5647 623 623 6.91% 11.03%

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 15 222 1310542 10133.31 627 612 129.3
A 10 83 457966 3537.98 627 612 129.3
A 15 174 25125 189.63 627 612 129.3
B 5 172 61192 488.1 631 615 124.1
B 5 255 22251 174.33 631 615 124.1
B 12 111 15615 120.86 631 615 124.1
C 14 254 2240461 17080.23 557 561 131.1
C 15 208 1220833 9305.11 557 561 131.1
C 9 187 341253 2597.93 557 561 131.1
D 13 249 1713295 11911.91 586 569 143.8
D 12 227 846822 5885.64 586 569 143.8
D 2 153 453359 3149.13 586 569 143.8

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