ASTROSAT CZTI

Data Quality Report

Orbit 00131

Creation date: 2024-06-27T13:56:48.063571
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/AS1P01_003T01_9000000002_00131cztM0_level2.evt modeM0/AS1P01_003T01_9000000002_00131cztM0_level2_quad_clean.evt
Size (bytes)1,016,821,44093,242,880
Size969.7 MB 88.9 MB
Events in quadrant A8,743,573595,329
Events in quadrant B7,337,818628,324
Events in quadrant C6,583,029613,375
Events in quadrant D7,750,049585,144

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300503
B0258462
C0236702
D0270842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57421632.838732%
B5742130.226402%
C5742380.661790%
D57421402.438175%

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 7364 5744 1010 1010 13.72% 17.58%
B 7364 5744 216 216 2.93% 3.76%
C 7364 5744 168 168 2.28% 2.92%
D 7364 5744 538 538 7.31% 9.37%

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 15 127 1872453 6594.98 1745 1709 283.7
A 15 70 28143 93.19 1745 1709 283.7
A 14 201 13833 42.74 1745 1709 283.7
B 0 235 318482 805.16 1773 1778 393.3
B 8 236 97411 243.13 1773 1778 393.3
B 8 6 38246 92.71 1773 1778 393.3
C 0 203 206030 456.54 1605 1667 447.6
C 9 204 23278 48.28 1605 1667 447.6
C 0 189 12708 24.67 1605 1667 447.6
D 10 244 713028 1751.99 1665 1671 406.0
D 13 207 67587 162.34 1665 1671 406.0
D 12 207 53319 127.2 1665 1671 406.0

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