ASTROSAT CZTI

Data Quality Report

Orbit 31126

Creation date: 2024-06-27T20:23:56.561784
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/AS1T04_018T01_9000004494_31126cztM0_level2.evt modeM0/AS1T04_018T01_9000004494_31126cztM0_level2_quad_clean.evt
Size (bytes)40,832,6408,124,480
Size38.9 MB 7.7 MB
Events in quadrant A241,86151,326
Events in quadrant B411,74150,154
Events in quadrant C253,61148,088
Events in quadrant D287,27848,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011490
B017150
C011570
D012740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57400.000000%
B57400.000000%
C57420.348432%
D57310.174520%

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 574 574 0 0 0.00% 0.00%
B 574 574 0 0 0.00% 0.00%
C 574 574 0 0 0.00% 0.00%
D 573 573 3 3 0.52% 0.52%

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 13 254 939 59.81 62 61 14.7
A 3 137 636 39.17 62 61 14.7
A 0 226 506 30.31 62 61 14.7
B 6 159 164233 11653.04 62 61 14.1
B 12 111 1544 105.26 62 61 14.1
B 14 111 1327 89.86 62 61 14.1
C 14 238 10119 622.58 60 60 16.2
C 9 54 2845 172.37 60 60 16.2
C 1 16 1636 97.54 60 60 16.2
D 13 174 38976 2388.7 59 57 16.3
D 8 195 22505 1377.77 59 57 16.3
D 2 234 2270 135.83 59 57 16.3

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