ASTROSAT CZTI

Data Quality Report

Orbit 21616

Creation date: 2024-06-27T18:30:15.330219
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/AS1A05_094T01_9000003204_21616cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21616cztM0_level2_quad_clean.evt
Size (bytes)522,688,32091,094,400
Size498.5 MB 86.9 MB
Events in quadrant A3,665,842565,768
Events in quadrant B3,725,770574,775
Events in quadrant C3,520,592554,703
Events in quadrant D4,405,740539,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155802
B0157301
C0153251
D0182041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7530791.049137%
B75311011.341123%
C75311061.407516%
D75312082.761917%

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 7835 7531 0 0 0.00% 0.00%
B 7836 7532 11 11 0.14% 0.15%
C 7836 7532 0 0 0.00% 0.00%
D 7836 7532 90 90 1.15% 1.19%

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 15 236 166908 904.31 907 885 183.6
A 13 254 10868 54.38 907 885 183.6
A 3 137 7808 37.71 907 885 183.6
B 3 64 74603 428.56 901 879 172.0
B 15 36 24221 135.69 901 879 172.0
B 0 219 23876 133.68 901 879 172.0
C 14 238 135477 663.14 865 868 203.0
C 9 54 7366 32.01 865 868 203.0
C 13 61 6047 25.51 865 868 203.0
D 1 52 453292 2122.53 870 842 213.2
D 13 153 191978 896.66 870 842 213.2
D 7 238 151751 707.94 870 842 213.2

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