ASTROSAT CZTI

Data Quality Report

Orbit 40605

Creation date: 2024-06-27T22:18:07.352509
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_054T02_9000005550_40605cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40605cztM0_level2_quad_clean.evt
Size (bytes)370,059,84086,045,760
Size352.9 MB 82.1 MB
Events in quadrant A2,783,236617,398
Events in quadrant B4,296,373562,323
Events in quadrant C3,067,202584,396
Events in quadrant D3,154,681484,640

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111653
B0160252
C0121592
D0127152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5088100.196541%
B508866313.030660%
C50881492.928459%
D508871414.033019%

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 7181 5089 4 4 0.06% 0.08%
B 7181 5089 613 613 8.54% 12.05%
C 7181 5089 141 141 1.96% 2.77%
D 7180 5088 98 98 1.36% 1.93%

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 479196 4005.87 590 579 119.5
A 3 1 15903 128.26 590 579 119.5
A 5 168 7338 56.57 590 579 119.5
B 5 255 1539302 14690.58 546 533 104.7
B 0 190 468548 4468.12 546 533 104.7
B 3 112 78745 746.69 546 533 104.7
C 14 254 543083 4186.07 559 564 129.6
C 15 214 221358 1703.64 559 564 129.6
C 9 187 43864 334.1 559 564 129.6
D 12 227 374630 2869.53 528 515 130.4
D 2 153 276238 2114.84 528 515 130.4
D 12 191 203075 1553.67 528 515 130.4

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