ASTROSAT CZTI

Data Quality Report

Orbit 08501

Creation date: 2024-06-27T15:33:34.784102
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/AS1G07_060T01_9000001200_08501cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08501cztM0_level2_quad_clean.evt
Size (bytes)579,427,20083,975,040
Size552.6 MB 80.1 MB
Events in quadrant A4,645,971501,685
Events in quadrant B4,075,512504,184
Events in quadrant C3,762,338493,576
Events in quadrant D4,512,503479,125

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195763
B0175502
C0170202
D0187982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81347489.195968%
B81344565.606098%
C81342953.626752%
D81343594.413573%

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 8294 8137 138 138 1.66% 1.70%
B 8294 8136 7 7 0.08% 0.09%
C 8294 8137 0 0 0.00% 0.00%
D 8294 8138 7 7 0.08% 0.09%

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 867574 4318.91 973 947 200.7
A 5 16 27642 133.04 973 947 200.7
A 13 251 9428 42.27 973 947 200.7
B 4 81 86442 446.13 985 957 191.6
B 0 231 54138 277.54 985 957 191.6
B 0 214 49628 254.01 985 957 191.6
C 13 61 7316 28.39 961 962 223.8
C 8 128 5846 21.82 961 962 223.8
C 8 222 3660 12.05 961 962 223.8
D 1 52 757984 3224.08 953 925 234.8
D 14 34 106094 447.88 953 925 234.8
D 2 234 29103 120.0 953 925 234.8

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