ASTROSAT CZTI

Data Quality Report

Orbit 01561

Creation date: 2024-06-27T14:12:28.096259
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/AS1G02_019T04_9000000262_01561cztM0_level2.evt modeM0/AS1G02_019T04_9000000262_01561cztM0_level2_quad_clean.evt
Size (bytes)382,651,20016,035,840
Size364.9 MB 15.3 MB
Events in quadrant A2,901,43679,923
Events in quadrant B2,949,44479,968
Events in quadrant C2,780,29877,810
Events in quadrant D2,799,30078,365

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114
B0103
C092
D092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08125
B07925
C07919
D08030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176567403
B0179037529
C0172127335
D0172527263

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230820.086655%
B230520.086768%
C230230.130321%
D2337170.727428%

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 7344 2623 61 61 0.83% 2.33%
B 7344 2629 60 60 0.82% 2.28%
C 7336 2618 33 33 0.45% 1.26%
D 7347 2666 59 59 0.80% 2.21%

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 15 236 3172 13.18 757 761 182.9
A 12 251 3065 12.6 757 761 182.9
A 10 2 2263 8.21 757 761 182.9
B 0 220 22102 117.93 771 775 180.8
B 4 200 2759 10.97 771 775 180.8
B 0 182 2305 8.46 771 775 180.8
C 8 208 14913 72.04 706 729 196.9
C 7 159 5535 24.41 706 729 196.9
C 8 229 3940 16.31 706 729 196.9
D 13 105 45617 215.48 721 739 208.3
D 13 169 35987 169.24 721 739 208.3
D 13 72 10380 46.29 721 739 208.3

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