ASTROSAT CZTI

Data Quality Report

Orbit 12927

Creation date: 2024-06-27T16:34:03.224661
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/AS1A04_116T01_9000001896_12927cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12927cztM0_level2_quad_clean.evt
Size (bytes)176,878,08045,685,440
Size168.7 MB 43.6 MB
Events in quadrant A1,400,507307,620
Events in quadrant B1,632,730294,920
Events in quadrant C1,032,208314,269
Events in quadrant D1,134,843302,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055960
B062970
C045500
D047990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2265552.428256%
B226523210.242826%
C226500.000000%
D226570.309051%

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 2266 2266 41 41 1.81% 1.81%
B 2266 2266 148 148 6.53% 6.53%
C 2266 2266 0 0 0.00% 0.00%
D 2266 2266 6 6 0.26% 0.26%

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 15 239 125185 2217.98 274 270 56.3
A 15 223 111153 1968.82 274 270 56.3
A 1 162 44950 793.33 274 270 56.3
B 4 239 502524 10191.47 256 250 49.3
B 3 64 112045 2268.39 256 250 49.3
B 0 230 6916 135.26 256 250 49.3
C 13 61 1966 27.88 264 265 61.0
C 4 112 1774 24.73 264 265 61.0
C 8 222 854 9.65 264 265 61.0
D 8 195 61900 967.45 268 263 63.7
D 1 52 28746 447.07 268 263 63.7
D 2 14 9246 141.0 268 263 63.7

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