ASTROSAT CZTI

Data Quality Report

Orbit 22555

Creation date: 2024-06-27T18:42:45.001629
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_148T05_9000003346_22555cztM0_level2.evt modeM0/AS1A07_148T05_9000003346_22555cztM0_level2_quad_clean.evt
Size (bytes)532,566,72097,680,960
Size507.9 MB 93.2 MB
Events in quadrant A3,733,620609,217
Events in quadrant B3,903,194620,888
Events in quadrant C3,951,724601,558
Events in quadrant D4,018,522592,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160852
B0166332
C0166222
D0173112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7688730.949532%
B76881521.977107%
C76881812.354318%
D76881471.912071%

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 9003 7690 0 0 0.00% 0.00%
B 9003 7690 5 5 0.06% 0.07%
C 9003 7690 1 1 0.01% 0.01%
D 9003 7690 57 57 0.63% 0.74%

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 13 254 13157 62.2 968 946 196.3
A 0 226 8427 38.11 968 946 196.3
A 3 137 8382 37.88 968 946 196.3
B 15 33 74194 392.64 965 937 186.6
B 0 228 26446 136.72 965 937 186.6
B 12 111 22284 114.41 965 937 186.6
C 14 238 146172 665.21 932 937 218.3
C 0 207 138712 631.04 932 937 218.3
C 0 10 19849 86.62 932 937 218.3
D 13 172 173473 749.55 941 912 230.2
D 13 249 169871 733.9 941 912 230.2
D 1 52 45795 194.96 941 912 230.2

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