ASTROSAT CZTI

Data Quality Report

Orbit 26606

Creation date: 2024-06-27T19:30:55.775193
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/AS1A09_095T02_9000003846_26606cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26606cztM0_level2_quad_clean.evt
Size (bytes)662,152,32092,456,640
Size631.5 MB 88.2 MB
Events in quadrant A3,264,270633,051
Events in quadrant B3,470,856638,148
Events in quadrant C3,586,651598,925
Events in quadrant D9,306,713490,999

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134860
B0140170
C0145370
D0320650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62751041.657371%
B62751402.231076%
C62752163.442231%
D6275203132.366534%

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 7505 6276 0 0 0.00% 0.00%
B 7505 6276 5 5 0.07% 0.08%
C 7505 6276 43 43 0.57% 0.69%
D 7505 6276 1972 1972 26.28% 31.42%

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 13 29470 174.28 834 822 164.4
A 5 168 14069 80.59 834 822 164.4
A 13 254 10073 56.28 834 822 164.4
B 3 64 134051 885.3 820 803 150.5
B 0 189 75946 499.25 820 803 150.5
B 12 111 17551 111.27 820 803 150.5
C 15 208 286739 1606.83 778 783 178.0
C 14 238 129931 725.7 778 783 178.0
C 3 233 120183 670.92 778 783 178.0
D 1 52 4980478 29993.19 692 673 166.0
D 7 80 1482898 8927.39 692 673 166.0
D 2 250 191281 1148.03 692 673 166.0

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