ASTROSAT CZTI

Data Quality Report

Orbit 51889

Creation date: 2025-05-02T11:27:39.173862
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/AS1C09_011T05_9000006466_51889cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51889cztM0_level2_quad_clean.evt
Size (bytes)789,497,28068,195,520
Size752.9 MB 65.0 MB
Events in quadrant A5,243,741523,561
Events in quadrant B8,214,264402,963
Events in quadrant C3,579,370530,718
Events in quadrant D11,732,986196,941

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197281
B0284921
C0145541
D0388321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58693125.316067%
B5870204834.889267%
C5870560.954003%
D5870381264.940375%

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 6794 5870 254 254 3.74% 4.33%
B 6795 5871 1636 1636 24.08% 27.87%
C 6795 5871 58 58 0.85% 0.99%
D 6795 5871 3057 3057 44.99% 52.07%

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 12 3 1446106 9899.69 589 575 146.0
A 3 30 401055 2742.68 589 575 146.0
A 11 3 338823 2316.48 589 575 146.0
B 4 170 4387706 40035.03 508 490 109.6
B 10 254 737682 6727.16 508 490 109.6
B 4 171 614971 5607.37 508 490 109.6
C 15 248 459181 2864.04 580 578 160.1
C 10 22 160265 997.27 580 578 160.1
C 14 246 119728 744.11 580 578 160.1
D 11 129 6322179 61734.24 355 340 102.4
D 6 42 1659879 16205.79 355 340 102.4
D 12 17 845134 8249.61 355 340 102.4

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