ASTROSAT CZTI

Data Quality Report

Orbit 40854

Creation date: 2024-06-27T22:21:22.394729
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_104T02_9000005572_40854cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40854cztM0_level2_quad_clean.evt
Size (bytes)366,713,28083,606,400
Size349.7 MB 79.7 MB
Events in quadrant A2,803,672566,695
Events in quadrant B2,677,103572,460
Events in quadrant C3,244,127544,819
Events in quadrant D4,453,124490,402

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114353
B0115642
C0127802
D0167572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5095160.314033%
B50951502.944063%
C50951302.551521%
D50952835.554465%

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 7097 5096 12 12 0.17% 0.24%
B 7097 5096 84 84 1.18% 1.65%
C 7097 5096 140 140 1.97% 2.75%
D 7097 5096 261 261 3.68% 5.12%

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 477633 4128.52 560 548 115.6
A 12 189 67778 581.78 560 548 115.6
A 13 248 44416 379.62 560 548 115.6
B 4 171 474604 4385.12 553 537 108.1
B 5 255 23332 210.85 553 537 108.1
B 12 111 13584 120.68 553 537 108.1
C 14 254 617476 4866.46 542 546 126.8
C 15 214 218050 1715.71 542 546 126.8
C 3 233 146872 1154.25 542 546 126.8
D 12 79 1415827 10834.34 530 515 130.6
D 13 249 690593 5282.61 530 515 130.6
D 1 47 188325 1437.7 530 515 130.6

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