ASTROSAT CZTI

Data Quality Report

Orbit 39452

Creation date: 2024-06-27T22:04:44.613491
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_025T17_9000005476_39452cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39452cztM0_level2_quad_clean.evt
Size (bytes)536,440,32093,009,600
Size511.6 MB 88.7 MB
Events in quadrant A8,738,515518,415
Events in quadrant B3,093,662666,834
Events in quadrant C3,923,635631,977
Events in quadrant D3,639,373582,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300683
B0131412
C0153412
D0149492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5955156326.246851%
B5955611.024349%
C59551692.837951%
D59551772.972292%

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 7266 5955 1471 1471 20.24% 24.70%
B 7267 5956 49 49 0.67% 0.82%
C 7267 5956 156 156 2.15% 2.62%
D 7267 5956 166 166 2.28% 2.79%

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 5944277 49788.27 586 575 119.4
A 10 83 420858 3520.56 586 575 119.4
A 15 174 36899 304.27 586 575 119.4
B 8 3 435744 3466.2 651 634 125.5
B 15 85 61177 482.3 651 634 125.5
B 0 199 22556 174.64 651 634 125.5
C 15 208 754234 5070.22 633 639 148.6
C 9 187 377891 2538.17 633 639 148.6
C 15 214 244866 1643.17 633 639 148.6
D 12 227 820033 5273.02 637 617 155.4
D 13 249 93014 594.58 637 617 155.4
D 2 249 85506 546.27 637 617 155.4

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