ASTROSAT CZTI

Data Quality Report

Orbit 15301

Creation date: 2024-06-27T17:06:27.454063
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_223T01_9000002258_15301cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15301cztM0_level2_quad_clean.evt
Size (bytes)449,881,92087,972,480
Size429.0 MB 83.9 MB
Events in quadrant A3,140,364564,089
Events in quadrant B3,506,018569,888
Events in quadrant C3,375,160558,226
Events in quadrant D3,173,652530,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134813
B0145242
C0138102
D0136832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6323470.743318%
B6323871.375929%
C6323270.427012%
D6323480.759133%

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 7489 6325 7 7 0.09% 0.11%
B 7489 6325 35 35 0.47% 0.55%
C 7489 6325 2 2 0.03% 0.03%
D 7489 6325 29 29 0.39% 0.46%

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 69 65306 400.52 790 774 161.1
A 9 143 32972 199.84 790 774 161.1
A 0 226 7120 39.39 790 774 161.1
B 10 16 262665 1725.06 790 771 151.8
B 0 190 41501 268.28 790 771 151.8
B 0 197 28811 184.69 790 771 151.8
C 3 233 387467 2185.75 761 766 176.9
C 7 247 16122 86.8 761 766 176.9
C 13 61 5412 26.26 761 766 176.9
D 8 195 99890 527.5 761 739 188.0
D 2 33 81172 427.92 761 739 188.0
D 7 38 46289 242.33 761 739 188.0

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