ASTROSAT CZTI

Data Quality Report

Orbit 42797

Creation date: 2024-06-27T22:44:21.514661
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/AS1A05_013T01_9000005822_42797cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42797cztM0_level2_quad_clean.evt
Size (bytes)311,198,40093,314,880
Size296.8 MB 89.0 MB
Events in quadrant A3,048,058625,471
Events in quadrant B2,582,346627,703
Events in quadrant C2,719,245614,287
Events in quadrant D2,734,810567,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121922
B0115572
C0114662
D0120482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5583110.197027%
B5583310.555257%
C558340.071646%
D5583320.573169%

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 7076 5584 3 3 0.04% 0.05%
B 7076 5584 17 17 0.24% 0.30%
C 7076 5584 2 2 0.03% 0.04%
D 7076 5584 29 29 0.41% 0.52%

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 10 83 593254 4631.32 620 607 128.0
A 13 248 22726 172.85 620 607 128.0
A 2 79 20452 155.08 620 607 128.0
B 5 255 60745 500.99 613 597 120.1
B 15 85 60583 499.64 613 597 120.1
B 7 202 20813 168.38 613 597 120.1
C 15 214 226073 1603.72 605 608 140.6
C 14 254 64443 454.05 605 608 140.6
C 8 79 38586 270.13 605 608 140.6
D 7 96 113699 756.76 608 589 149.5
D 1 52 93450 621.29 608 589 149.5
D 12 233 62009 410.93 608 589 149.5

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