ASTROSAT CZTI

Data Quality Report

Orbit 14251

Creation date: 2024-06-27T16:52:28.480675
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/AS1G08_069T01_9000002102_14251cztM0_level2.evt modeM0/AS1G08_069T01_9000002102_14251cztM0_level2_quad_clean.evt
Size (bytes)1,321,822,080217,664,640
Size1.2 GB 207.6 MB
Events in quadrant A8,217,2541,441,599
Events in quadrant B8,109,5581,415,677
Events in quadrant C7,671,4521,365,344
Events in quadrant D14,969,5821,282,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347855
B0345104
C0328994
D0564564

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157662581.636433%
B157663582.270709%
C157661110.704047%
D15766170810.833439%

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 17372 15771 22 22 0.13% 0.14%
B 17372 15770 47 47 0.27% 0.30%
C 17372 15771 4 4 0.02% 0.03%
D 17372 15771 1157 1157 6.66% 7.34%

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 9 143 550236 1435.38 1899 1857 382.0
A 12 189 217641 564.81 1899 1857 382.0
A 8 15 97195 249.55 1899 1857 382.0
B 0 229 359850 998.16 1882 1833 358.7
B 10 244 239177 661.72 1882 1833 358.7
B 4 142 47385 127.0 1882 1833 358.7
C 3 233 490833 1156.54 1830 1839 422.8
C 5 96 22338 48.48 1830 1839 422.8
C 14 234 18382 39.13 1830 1839 422.8
D 5 222 4055133 9742.8 1754 1713 416.0
D 8 195 3414286 8202.46 1754 1713 416.0
D 13 122 581562 1393.72 1754 1713 416.0

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