ASTROSAT CZTI

Data Quality Report

Orbit 29346

Creation date: 2024-06-27T20:03:04.176717
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/AS1T03_279T01_9000004218_29346cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29346cztM0_level2_quad_clean.evt
Size (bytes)788,996,16088,375,680
Size752.4 MB 84.3 MB
Events in quadrant A4,053,711570,182
Events in quadrant B4,930,160575,964
Events in quadrant C5,841,965537,707
Events in quadrant D8,567,699475,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167541
B0194051
C0224621
D0306461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74192162.911444%
B74196769.111740%
C74206678.989218%
D7420143819.380054%

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 7694 7420 96 96 1.25% 1.29%
B 7694 7420 343 343 4.46% 4.62%
C 7695 7421 23 23 0.30% 0.31%
D 7695 7421 1057 1057 13.74% 14.24%

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 15 174 541369 2928.34 908 887 184.6
A 13 254 16365 83.86 908 887 184.6
A 3 137 8691 42.28 908 887 184.6
B 5 172 1193066 7157.69 871 847 166.6
B 10 245 179552 1072.89 871 847 166.6
B 5 255 42549 250.37 871 847 166.6
C 10 9 2018222 10258.08 832 837 196.7
C 14 238 227600 1153.05 832 837 196.7
C 14 254 135477 684.62 832 837 196.7
D 7 80 2960274 15369.04 800 778 192.6
D 12 33 1036199 5377.07 800 778 192.6
D 8 195 646096 3351.22 800 778 192.6

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