ASTROSAT CZTI

Data Quality Report

Orbit 50207

Creation date: 2025-01-10T20:17:07.059426
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_003T01_9000006442_50207cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50207cztM0_level2_quad_clean.evt
Size (bytes)1,492,994,88069,419,520
Size1.4 GB 66.2 MB
Events in quadrant A12,687,894453,765
Events in quadrant B6,963,162753,506
Events in quadrant C18,552,07052,174
Events in quadrant D16,451,438288,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140372584478760140372416135214
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0432701
B0261621
C0605571
D0543665

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7954341642.946945%
B79547399.290923%
C7954745493.713855%
D7953479960.342009%

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 7953 7953 3007 3007 37.81% 37.81%
B 7954 7954 487 487 6.12% 6.12%
C 7954 7954 6517 6517 81.93% 81.93%
D 7952 7952 4657 4657 58.56% 58.56%

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 0 98 5721286 31929.95 708 687 179.2
A 12 250 1107081 6175.42 708 687 179.2
A 8 8 503809 2808.21 708 687 179.2
B 4 206 2750901 16004.94 817 790 171.8
B 4 170 115389 666.94 817 790 171.8
B 3 249 84080 484.73 817 790 171.8
C 4 111 15576412 213394.47 251 248 73.0
C 15 147 463292 6343.73 251 248 73.0
C 13 250 353154 4834.84 251 248 73.0
D 7 61 5347793 32835.65 558 537 162.8
D 15 108 3492208 21441.14 558 537 162.8
D 15 168 1717064 10540.6 558 537 162.8

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