ASTROSAT CZTI

Data Quality Report

Orbit 32754

Creation date: 2024-06-27T20:41:37.517502
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_057T04_9000004728_32754cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32754cztM0_level2_quad_clean.evt
Size (bytes)395,055,36087,186,240
Size376.8 MB 83.1 MB
Events in quadrant A2,415,980575,551
Events in quadrant B2,874,740580,645
Events in quadrant C2,581,269576,090
Events in quadrant D3,734,309539,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106093
B0120272
C0112692
D0147672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526160.114047%
B5261270.513210%
C5261651.235507%
D52612184.143699%

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 7024 5262 0 0 0.00% 0.00%
B 7024 5262 19 19 0.27% 0.36%
C 7024 5262 47 47 0.67% 0.89%
D 7024 5262 172 172 2.45% 3.27%

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 13 6 26720 212.57 616 605 122.9
A 13 254 9615 73.34 616 605 122.9
A 3 137 5402 39.05 616 605 122.9
B 12 1 129343 1077.57 621 607 119.5
B 4 251 68395 567.41 621 607 119.5
B 0 219 66421 550.89 621 607 119.5
C 0 10 184551 1329.79 597 603 138.3
C 9 187 32480 230.44 597 603 138.3
C 3 233 11247 76.95 597 603 138.3
D 2 250 512645 3470.03 579 568 147.6
D 7 80 419978 2842.09 579 568 147.6
D 8 195 236782 1600.68 579 568 147.6

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