ASTROSAT CZTI

Data Quality Report

Orbit 07636

Creation date: 2024-06-27T15:22:03.333985
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/AS1G06_016T01_9000001052_07636cztM0_level2.evt modeM0/AS1G06_016T01_9000001052_07636cztM0_level2_quad_clean.evt
Size (bytes)1,502,389,440203,080,320
Size1.4 GB 193.7 MB
Events in quadrant A7,764,0481,257,343
Events in quadrant B7,646,0491,286,391
Events in quadrant C20,515,6251,277,313
Events in quadrant D8,484,5161,215,252

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402035921
B0397495714
C08830717107
D0439906956

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212
B0202
C0213
D0213

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038961
B038965
C038958
D038952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16431650.395594%
B16451940.571394%
C15250461730.275410%
D163141681.029790%

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 21117 17686 0 0 0.00% 0.00%
B 21209 17723 7 7 0.03% 0.04%
C 20822 16680 4114 4114 19.76% 24.66%
D 21077 17573 71 71 0.34% 0.40%

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 0 128 262611 679.42 1895 1853 383.8
A 13 251 82705 210.66 1895 1853 383.8
A 4 2 66566 168.61 1895 1853 383.8
B 0 214 52174 136.6 1916 1869 368.3
B 4 81 41871 108.62 1916 1869 368.3
B 12 111 39336 101.74 1916 1869 368.3
C 9 68 14006575 38423.56 1571 1579 364.5
C 9 243 254765 694.63 1571 1579 364.5
C 4 254 75129 201.79 1571 1579 364.5
D 2 152 740427 1643.86 1829 1770 449.3
D 12 233 230034 508.0 1829 1770 449.3
D 2 14 202400 446.5 1829 1770 449.3

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