ASTROSAT CZTI

Data Quality Report

Orbit 39427

Creation date: 2024-06-27T22:04:26.190716
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_39427cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39427cztM0_level2_quad_clean.evt
Size (bytes)436,219,20092,920,320
Size416.0 MB 88.6 MB
Events in quadrant A4,452,026624,533
Events in quadrant B2,538,434650,632
Events in quadrant C4,916,365574,761
Events in quadrant D3,800,191566,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170203
B0115352
C0184802
D0153642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56711863.279845%
B567150.088168%
C56715329.381062%
D56711662.927173%

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 8777 5673 115 115 1.31% 2.03%
B 8777 5673 0 0 0.00% 0.00%
C 8777 5673 452 452 5.15% 7.97%
D 8777 5673 126 126 1.44% 2.22%

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 1483180 11442.52 626 614 129.6
A 10 83 466931 3599.06 626 614 129.6
A 2 79 29529 223.16 626 614 129.6
B 5 172 22405 176.51 632 614 123.5
B 5 255 20001 157.04 632 614 123.5
B 12 111 15481 120.43 632 614 123.5
C 15 208 1751288 12449.46 597 601 140.6
C 9 187 365081 2591.88 597 601 140.6
C 15 214 230477 1634.69 597 601 140.6
D 12 227 575353 3863.79 610 593 148.8
D 2 249 217605 1458.85 610 593 148.8
D 2 153 205233 1375.68 610 593 148.8

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