ASTROSAT CZTI

Data Quality Report

Orbit 44892

Creation date: 2024-06-27T23:07:42.086906
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/AS1A13_017T02_9000006032_44892cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44892cztM0_level2_quad_clean.evt
Size (bytes)551,911,680103,896,000
Size526.3 MB 99.1 MB
Events in quadrant A5,040,394714,211
Events in quadrant B3,394,171740,467
Events in quadrant C2,943,859714,566
Events in quadrant D8,568,404540,601

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195903
B0140341
C0129291
D0298508

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62341492.390119%
B62361181.892239%
C6236791.266838%
D6235136421.876504%

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 7330 6236 8 8 0.11% 0.13%
B 7331 6237 14 14 0.19% 0.22%
C 7331 6237 6 6 0.08% 0.10%
D 7331 6237 1091 1091 14.88% 17.49%

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 10 83 2091574 13670.02 735 718 153.0
A 10 248 40683 261.29 735 718 153.0
A 10 255 31058 198.36 735 718 153.0
B 0 183 178406 1243.82 730 709 142.9
B 7 221 77180 535.27 730 709 142.9
B 0 219 55056 380.41 730 709 142.9
C 14 254 54576 314.2 725 730 171.4
C 2 14 29010 165.02 725 730 171.4
C 1 3 11015 60.01 725 730 171.4
D 13 174 1976341 11862.85 667 648 166.5
D 5 222 1286720 7722.09 667 648 166.5
D 1 52 719201 4314.48 667 648 166.5

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