ASTROSAT CZTI

Data Quality Report

Orbit 42364

Creation date: 2024-06-27T22:39:27.145505
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/AS1C06_010T01_9000005800_42364cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42364cztM0_level2_quad_clean.evt
Size (bytes)376,067,52096,192,000
Size358.6 MB 91.7 MB
Events in quadrant A3,089,580643,161
Events in quadrant B3,322,075634,026
Events in quadrant C2,718,056640,309
Events in quadrant D4,324,482576,427

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130302
B0144112
C0121342
D0172642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5992100.166889%
B59922113.521362%
C599270.116822%
D59923285.473965%

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 7275 5993 4 4 0.05% 0.07%
B 7275 5993 129 129 1.77% 2.15%
C 7275 5993 4 4 0.05% 0.07%
D 7275 5993 270 270 3.71% 4.51%

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 593756 4583.06 630 616 129.4
A 2 79 26992 203.8 630 616 129.4
A 13 248 12669 93.13 630 616 129.4
B 5 255 623791 5211.75 618 599 119.6
B 0 230 47101 388.9 618 599 119.6
B 0 245 42613 351.36 618 599 119.6
C 15 214 251113 1729.14 621 624 144.9
C 15 111 23984 161.26 621 624 144.9
C 8 79 10713 69.64 621 624 144.9
D 1 52 800622 5323.57 610 591 150.3
D 13 249 342400 2274.47 610 591 150.3
D 12 233 224740 1491.53 610 591 150.3

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