ASTROSAT CZTI

Data Quality Report

Orbit 18634

Creation date: 2024-06-27T17:52:46.600658
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/AS1C04_001T01_9000002784_18634cztM0_level2.evt modeM0/AS1C04_001T01_9000002784_18634cztM0_level2_quad_clean.evt
Size (bytes)608,276,160139,354,560
Size580.1 MB 132.9 MB
Events in quadrant A3,711,762920,135
Events in quadrant B4,446,394931,142
Events in quadrant C3,854,349929,265
Events in quadrant D5,864,947882,154

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167042
B0186692
C0169002
D0228653

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8028700.871948%
B80282873.574988%
C80281441.793722%
D80284495.592925%

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 8533 8033 1 1 0.01% 0.01%
B 8533 8033 99 99 1.16% 1.23%
C 8533 8033 3 3 0.04% 0.04%
D 8533 8031 292 292 3.42% 3.64%

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 3 1 29524 148.56 948 928 192.5
A 9 143 15753 77.02 948 928 192.5
A 13 254 11740 56.17 948 928 192.5
B 10 245 286559 1587.43 948 924 179.9
B 0 230 176724 977.02 948 924 179.9
B 12 18 72263 396.47 948 924 179.9
C 14 238 143082 653.98 928 931 217.4
C 3 233 49745 224.57 928 931 217.4
C 9 54 45887 206.82 928 931 217.4
D 1 52 1432318 6464.27 911 882 221.4
D 7 238 859894 3879.24 911 882 221.4
D 14 34 84310 376.76 911 882 221.4

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