ASTROSAT CZTI

Data Quality Report

Orbit 40306

Creation date: 2024-06-27T22:14:47.822936
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/AS1A12_056T02_9000005538_40306cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40306cztM0_level2_quad_clean.evt
Size (bytes)453,674,88094,314,240
Size432.7 MB 89.9 MB
Events in quadrant A3,200,542666,989
Events in quadrant B2,902,317683,059
Events in quadrant C2,781,202650,425
Events in quadrant D7,453,133445,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130483
B0126752
C0118182
D0262552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5864260.443383%
B5864220.375171%
C586420.034106%
D5864167728.598226%

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 7208 5865 7 7 0.10% 0.12%
B 7208 5865 7 7 0.10% 0.12%
C 7208 5865 1 1 0.01% 0.02%
D 7207 5864 1566 1566 21.73% 26.71%

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 10 83 506284 3766.25 654 640 134.3
A 2 79 65818 485.47 654 640 134.3
A 13 248 33860 247.44 654 640 134.3
B 4 171 161203 1265.67 652 635 126.9
B 0 229 57479 448.07 652 635 126.9
B 0 230 47137 366.55 652 635 126.9
C 15 214 248945 1634.81 644 649 151.9
C 0 10 10601 65.53 644 649 151.9
C 9 187 6823 40.65 644 649 151.9
D 12 227 4733618 34849.21 543 527 135.8
D 1 47 354651 2607.37 543 527 135.8
D 2 250 153703 1127.82 543 527 135.8

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