ASTROSAT CZTI

Data Quality Report

Orbit 50621

Creation date: 2025-02-06T08:34:05.132977
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/AS1T05_239T01_9000006444_50621cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50621cztM0_level2_quad_clean.evt
Size (bytes)562,645,44094,746,240
Size536.6 MB 90.4 MB
Events in quadrant A4,389,642621,426
Events in quadrant B6,237,940650,313
Events in quadrant C4,226,725591,394
Events in quadrant D5,456,736540,790

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176883
B0231692
C0171852
D0210562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66622423.632543%
B66635848.764821%
C66633124.682575%
D66634767.143929%

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 7657 6663 192 192 2.51% 2.88%
B 7658 6663 424 424 5.54% 6.36%
C 7658 6663 267 267 3.49% 4.01%
D 7658 6663 424 424 5.54% 6.36%

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 8 247 432316 2494.18 701 683 173.1
A 9 96 213951 1232.36 701 683 173.1
A 3 130 201612 1161.06 701 683 173.1
B 4 170 1776094 12178.41 687 663 145.8
B 2 176 550549 3771.89 687 663 145.8
B 3 249 472126 3233.96 687 663 145.8
C 15 199 347841 1795.22 690 682 193.4
C 0 177 338705 1747.97 690 682 193.4
C 15 174 136370 701.66 690 682 193.4
D 2 165 1047636 5636.38 676 656 185.8
D 8 246 442153 2376.78 676 656 185.8
D 6 42 202405 1086.11 676 656 185.8

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