ASTROSAT CZTI

Data Quality Report

Orbit 41506

Creation date: 2024-06-27T22:29:54.147896
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_035T02_9000005676_41506cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41506cztM0_level2_quad_clean.evt
Size (bytes)302,633,28083,548,800
Size288.6 MB 79.7 MB
Events in quadrant A2,956,685555,534
Events in quadrant B2,277,844579,538
Events in quadrant C2,901,717532,706
Events in quadrant D2,675,757511,210

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118143
B0103002
C0116862
D0114852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50061172.337195%
B5006100.199760%
C50062274.534559%
D5006541.078706%

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 7009 5007 112 112 1.60% 2.24%
B 7009 5007 2 2 0.03% 0.04%
C 7009 5007 228 228 3.25% 4.55%
D 7009 5007 60 60 0.86% 1.20%

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 483690 4354.23 543 531 111.0
A 15 190 344021 3095.53 543 531 111.0
A 13 6 13803 119.61 543 531 111.0
B 0 190 113673 1074.72 545 529 105.3
B 0 245 14397 131.73 545 529 105.3
B 12 111 13097 119.38 545 529 105.3
C 0 10 609811 4948.76 528 530 123.1
C 15 214 206760 1675.06 528 530 123.1
C 14 254 12237 95.09 528 530 123.1
D 2 249 166905 1261.05 540 527 131.9
D 1 47 90097 678.89 540 527 131.9
D 12 16 89924 677.58 540 527 131.9

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