ASTROSAT CZTI

Data Quality Report

Orbit 29542

Creation date: 2024-06-27T20:05:13.564924
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/AS1A10_073T07_9000004254_29542cztM0_level2.evt modeM0/AS1A10_073T07_9000004254_29542cztM0_level2_quad_clean.evt
Size (bytes)668,177,280112,144,320
Size637.2 MB 106.9 MB
Events in quadrant A3,271,456751,941
Events in quadrant B3,408,137795,314
Events in quadrant C3,620,017754,695
Events in quadrant D9,512,551656,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136212
B0140882
C0147733
D0326322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275490.780876%
B6275620.988048%
C62742604.144087%
D6274113218.042716%

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 7565 6276 5 5 0.07% 0.08%
B 7565 6276 8 8 0.11% 0.13%
C 7564 6275 0 0 0.00% 0.00%
D 7564 6274 1088 1088 14.38% 17.34%

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 0 13 33962 198.23 836 820 167.2
A 13 254 12452 69.58 836 820 167.2
A 3 137 7857 42.09 836 820 167.2
B 5 255 44313 275.17 848 829 158.0
B 12 111 18749 113.4 848 829 158.0
B 0 230 17700 106.76 848 829 158.0
C 3 233 217166 1150.69 808 816 188.0
C 14 238 174615 924.38 808 816 188.0
C 14 254 67293 353.57 808 816 188.0
D 8 195 3867204 20849.21 775 755 185.4
D 7 69 2065341 11132.95 775 755 185.4
D 7 238 277820 1494.03 775 755 185.4

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