ASTROSAT CZTI

Data Quality Report

Orbit 17757

Creation date: 2024-06-27T17:40:33.471694
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/AS1T03_070T08_9000002646_17757cztM0_level2.evt modeM0/AS1T03_070T08_9000002646_17757cztM0_level2_quad_clean.evt
Size (bytes)343,126,08056,070,720
Size327.2 MB 53.5 MB
Events in quadrant A2,138,120351,868
Events in quadrant B2,401,851355,272
Events in quadrant C2,628,795337,545
Events in quadrant D2,908,288328,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095641
B0102371
C0107851
D0119801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4613340.737047%
B4613932.016042%
C46131382.991546%
D46131884.075439%

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 5758 4613 0 0 0.00% 0.00%
B 5758 4614 35 35 0.61% 0.76%
C 5758 4613 50 50 0.87% 1.08%
D 5758 4613 115 115 2.00% 2.49%

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 0 226 4851 38.56 554 542 111.7
A 3 137 4134 32.15 554 542 111.7
A 12 194 4067 31.55 554 542 111.7
B 4 142 141059 1330.37 555 540 105.6
B 10 245 33685 313.8 555 540 105.6
B 0 219 31658 294.61 555 540 105.6
C 4 254 364718 2889.88 532 538 126.0
C 14 238 81124 639.47 532 538 126.0
C 3 233 71477 562.92 532 538 126.0
D 7 238 731392 5693.99 531 520 128.4
D 5 222 109911 852.23 531 520 128.4
D 10 70 20494 155.61 531 520 128.4

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