ASTROSAT CZTI

Data Quality Report

Orbit 26564

Creation date: 2024-06-27T19:30:31.611220
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/AS1T03_220T01_9000003842_26564cztM0_level2.evt modeM0/AS1T03_220T01_9000003842_26564cztM0_level2_quad_clean.evt
Size (bytes)790,225,92099,745,920
Size753.6 MB 95.1 MB
Events in quadrant A3,323,538696,721
Events in quadrant B4,225,849699,833
Events in quadrant C4,069,978685,548
Events in quadrant D11,867,874478,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138960
B0168990
C0164310
D0398350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6575791.201521%
B65763034.607664%
C65762704.105839%
D6575366355.711027%

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 7445 6575 2 2 0.03% 0.03%
B 7446 6576 160 160 2.15% 2.43%
C 7446 6576 78 78 1.05% 1.19%
D 7445 6575 3398 3398 45.64% 51.68%

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 5 168 86320 521.32 824 807 164.0
A 9 130 25226 148.87 824 807 164.0
A 0 13 23836 140.39 824 807 164.0
B 5 172 668553 4394.2 813 792 152.0
B 3 112 149426 978.09 813 792 152.0
B 3 64 131252 858.49 813 792 152.0
C 3 233 553772 3019.99 791 800 183.1
C 4 254 296152 1613.03 791 800 183.1
C 14 238 124945 678.0 791 800 183.1
D 7 80 7113934 43139.08 618 604 164.9
D 12 233 1606459 9738.77 618 604 164.9
D 1 52 398532 2413.25 618 604 164.9

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