ASTROSAT CZTI

Data Quality Report

Orbit 33494

Creation date: 2024-06-27T20:49:27.067896
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/AS1A11_060T01_9000004804_33494cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33494cztM0_level2_quad_clean.evt
Size (bytes)525,556,80068,624,640
Size501.2 MB 65.4 MB
Events in quadrant A2,526,644446,939
Events in quadrant B4,196,983426,761
Events in quadrant C3,470,459432,270
Events in quadrant D5,367,467404,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106113
B0157412
C0137372
D0195932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524590.171592%
B52454528.617731%
C5245921.754051%
D524560911.611058%

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 7189 5246 0 0 0.00% 0.00%
B 7189 5246 395 395 5.49% 7.53%
C 7189 5246 90 90 1.25% 1.72%
D 7189 5246 587 587 8.17% 11.19%

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 13 254 8588 61.23 652 641 129.8
A 13 6 7990 56.62 652 641 129.8
A 3 137 6183 42.7 652 641 129.8
B 5 255 1294537 10696.15 638 622 121.0
B 5 172 358660 2959.72 638 622 121.0
B 4 251 15171 120.27 638 622 121.0
C 7 221 343545 2336.61 640 647 146.7
C 15 214 223442 1518.19 640 647 146.7
C 0 10 183982 1249.3 640 647 146.7
D 8 195 1078280 7264.36 611 595 148.4
D 13 249 708733 4773.35 611 595 148.4
D 1 52 652330 4393.15 611 595 148.4

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