ASTROSAT CZTI

Data Quality Report

Orbit 52105

Creation date: 2025-05-17T00:13:45.408206
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/AS1C09_011T07_9000006470_52105cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52105cztM0_level2_quad_clean.evt
Size (bytes)917,360,64062,896,320
Size874.9 MB 60.0 MB
Events in quadrant A3,020,604574,722
Events in quadrant B4,248,310591,287
Events in quadrant C11,711,304258,137
Events in quadrant D14,529,01174,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128771
B0165311
C0387671
D0471457

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5802971.671837%
B58034036.944684%
C5803352360.709978%
D5802514688.693554%

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 6987 5803 31 31 0.44% 0.53%
B 6988 5804 214 214 3.06% 3.69%
C 6988 5804 2963 2963 42.40% 51.05%
D 6987 5803 5095 5095 72.92% 87.80%

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 8 43 204984 1346.57 620 607 151.8
A 4 3 112994 740.48 620 607 151.8
A 13 248 44450 288.87 620 607 151.8
B 8 3 701920 5539.44 608 589 126.6
B 10 44 291412 2297.06 608 589 126.6
B 4 171 143220 1126.57 608 589 126.6
C 5 80 4687681 37606.26 450 445 124.6
C 15 224 3063465 24574.98 450 445 124.6
C 10 171 585200 4691.56 450 445 124.6
D 6 42 10085329 107308.18 329 314 94.0
D 15 94 2465027 26225.43 329 314 94.0
D 11 176 129519 1374.78 329 314 94.0

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