ASTROSAT CZTI

Data Quality Report

Orbit 37419

Creation date: 2024-06-27T21:39:44.732485
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/AS1A09_002T01_9000005322_37419cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37419cztM0_level2_quad_clean.evt
Size (bytes)428,224,32077,353,920
Size408.4 MB 73.8 MB
Events in quadrant A3,176,489489,430
Events in quadrant B3,014,227507,782
Events in quadrant C2,992,352504,476
Events in quadrant D3,428,781472,454

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125323
B0120712
C0117182
D0135572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5255981.864891%
B5255791.503330%
C5255480.913416%
D5255751.427212%

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 7347 5256 69 69 0.94% 1.31%
B 7347 5256 46 46 0.63% 0.88%
C 7347 5256 44 44 0.60% 0.84%
D 7347 5256 70 70 0.95% 1.33%

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 15 222 291924 2247.88 652 640 129.6
A 10 83 272602 2098.77 652 640 129.6
A 9 143 33861 256.37 652 640 129.6
B 5 172 275948 2296.92 654 638 119.9
B 0 229 61750 509.86 654 638 119.9
B 0 155 42149 346.33 654 638 119.9
C 15 214 223549 1502.49 652 659 148.3
C 0 10 141781 951.3 652 659 148.3
C 14 254 32410 214.03 652 659 148.3
D 12 235 292579 1865.89 646 631 156.5
D 2 249 207290 1320.79 646 631 156.5
D 12 227 189288 1205.74 646 631 156.5

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