ASTROSAT CZTI

Data Quality Report

Orbit 17079

Creation date: 2024-06-27T17:31:46.254246
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/AS1A05_004T04_9000002534_17079cztM0_level2.evt modeM0/AS1A05_004T04_9000002534_17079cztM0_level2_quad_clean.evt
Size (bytes)508,328,64093,608,640
Size484.8 MB 89.3 MB
Events in quadrant A3,054,444621,013
Events in quadrant B3,204,853643,160
Events in quadrant C4,299,846598,491
Events in quadrant D4,416,490540,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129312
B0133672
C0169062
D0174012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6180170.275081%
B6180310.501618%
C61801161.877023%
D61804577.394822%

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 7545 6181 0 0 0.00% 0.00%
B 7545 6181 2 2 0.03% 0.03%
C 7545 6181 1 1 0.01% 0.02%
D 7545 6181 389 389 5.16% 6.29%

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 4 2 28208 174.36 787 773 157.3
A 0 226 6975 39.42 787 773 157.3
A 12 194 5676 31.16 787 773 157.3
B 0 189 41134 272.57 799 779 148.1
B 12 111 16793 108.16 799 779 148.1
B 0 197 16074 103.31 799 779 148.1
C 3 233 1190684 6749.19 763 769 176.3
C 14 238 120293 677.94 763 769 176.3
C 7 247 8492 43.8 763 769 176.3
D 5 222 1344438 7604.51 732 713 176.7
D 10 70 271984 1535.2 732 713 176.7
D 2 234 22096 121.01 732 713 176.7

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