ASTROSAT CZTI

Data Quality Report

Orbit 46421

Creation date: 2024-06-27T23:23:00.929889
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/AS1A13_033T03_9000006206_46421cztM0_level2.fits modeM0/AS1A13_033T03_9000006206_46421cztM0_level2_quad_clean.evt
Size (bytes)573,194,880141,615,360
Size546.6 MB 135.1 MB
Events in quadrant A7,576,491925,404
Events in quadrant B4,323,378959,011
Events in quadrant C4,094,273932,476
Events in quadrant D4,539,287859,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279131
B0188881
C0183941
D0197181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88184154.706283%
B88193323.764599%
C88191912.165778%
D88182232.528918%

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 8848 8820 2 2 0.02% 0.02%
B 8849 8821 6 6 0.07% 0.07%
C 8849 8821 0 0 0.00% 0.00%
D 8848 8820 40 40 0.45% 0.45%

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 10 83 3446634 15864.94 1039 1016 217.2
A 0 247 75315 342.1 1039 1016 217.2
A 15 192 26171 115.82 1039 1016 217.2
B 0 190 81306 384.17 1038 1003 209.0
B 0 245 70503 332.49 1038 1003 209.0
B 12 111 27640 127.43 1038 1003 209.0
C 9 54 39399 157.24 1034 1036 244.0
C 3 233 18917 73.29 1034 1036 244.0
C 13 61 6838 23.78 1034 1036 244.0
D 13 249 277093 1067.34 1035 1004 258.7
D 2 249 104997 402.03 1035 1004 258.7
D 0 240 63890 243.11 1035 1004 258.7

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