ASTROSAT CZTI

Data Quality Report

Orbit 34605

Creation date: 2022-02-21T07:56:23.144905
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/AS1C07_014T01_9000004950_34605cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34605cztM0_level2_quad_clean.evt
Size (bytes)562,734,72057,591,360
Size536.7 MB 54.9 MB
Events in quadrant A2,720,341358,843
Events in quadrant B4,605,336331,187
Events in quadrant C3,060,990352,809
Events in quadrant D6,273,823305,632

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116383
B0172902
C0122142
D0224942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5648150.265581%
B564866811.827195%
C5648861.522663%
D564862811.118980%

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 7261 5649 6 6 0.08% 0.11%
B 7261 5649 473 473 6.51% 8.37%
C 7261 5649 67 67 0.92% 1.19%
D 7261 5649 516 516 7.11% 9.13%

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 43561 314.59 677 664 136.4
A 9 143 42267 305.1 677 664 136.4
A 13 254 9593 65.48 677 664 136.4
B 5 172 1832903 14901.01 638 622 123.0
B 0 189 50378 404.64 638 622 123.0
B 5 255 45256 362.99 638 622 123.0
C 15 214 236723 1537.45 656 665 153.5
C 0 10 220777 1433.6 656 665 153.5
C 14 67 29035 184.77 656 665 153.5
D 8 195 2497773 15526.89 629 614 160.8
D 2 250 608099 3777.23 629 614 160.8
D 7 223 225240 1396.68 629 614 160.8

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