ASTROSAT CZTI

Data Quality Report

Orbit 42031

Creation date: 2024-06-27T22:35:59.148863
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/AS1A12_037T01_9000005736_42031cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42031cztM0_level2_quad_clean.evt
Size (bytes)350,651,52094,086,720
Size334.4 MB 89.7 MB
Events in quadrant A3,562,637631,289
Events in quadrant B2,826,205641,189
Events in quadrant C2,685,816616,774
Events in quadrant D3,449,106550,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143172
B0123941
C0117601
D0145731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5857160.273177%
B5857530.904900%
C585720.034147%
D58572834.831825%

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 7139 5858 3 3 0.04% 0.05%
B 7139 5858 45 45 0.63% 0.77%
C 7139 5858 0 0 0.00% 0.00%
D 7139 5857 190 190 2.66% 3.24%

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 578356 4362.07 640 625 132.4
A 15 222 226868 1708.21 640 625 132.4
A 12 189 109433 821.54 640 625 132.4
B 5 32 133631 1074.4 633 615 123.8
B 0 190 105597 847.97 633 615 123.8
B 3 112 35470 281.53 633 615 123.8
C 15 214 243298 1639.14 625 629 148.0
C 13 61 4304 24.82 625 629 148.0
C 12 249 2726 14.16 625 629 148.0
D 13 249 581516 3855.87 612 595 150.7
D 12 6 280445 1857.51 612 595 150.7
D 2 249 75648 498.17 612 595 150.7

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