ASTROSAT CZTI

Data Quality Report

Orbit 22369

Creation date: 2024-06-27T18:39:55.235716
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/AS1A07_007T04_9000003310_22369cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22369cztM0_level2_quad_clean.evt
Size (bytes)616,815,36099,132,480
Size588.2 MB 94.5 MB
Events in quadrant A4,048,818615,475
Events in quadrant B4,096,851627,219
Events in quadrant C4,078,155599,220
Events in quadrant D5,877,033567,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176453
B0176603
C0176323
D0231183

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85312653.106318%
B85322883.375527%
C85322803.281763%
D85326107.149555%

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 8946 8533 0 0 0.00% 0.00%
B 8947 8534 0 0 0.00% 0.00%
C 8947 8533 2 2 0.02% 0.02%
D 8947 8534 388 388 4.34% 4.55%

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 3 1 49315 229.69 1037 1012 210.3
A 13 254 12035 52.42 1037 1012 210.3
A 3 137 9393 39.85 1037 1012 210.3
B 12 111 25045 120.57 1036 1007 199.4
B 11 111 22088 105.74 1036 1007 199.4
B 14 111 19425 92.38 1036 1007 199.4
C 14 238 157052 667.65 997 999 233.7
C 10 22 19061 77.28 997 999 233.7
C 7 245 7335 27.11 997 999 233.7
D 1 52 2009827 8293.41 988 955 242.2
D 15 145 67327 274.01 988 955 242.2
D 2 234 35565 142.88 988 955 242.2

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