ASTROSAT CZTI

Data Quality Report

Orbit 36931

Creation date: 2024-06-27T21:33:20.547306
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/AS1A11_087T05_9000005248_36931cztM0_level2.evt modeM0/AS1A11_087T05_9000005248_36931cztM0_level2_quad_clean.evt
Size (bytes)427,089,60066,767,040
Size407.3 MB 63.7 MB
Events in quadrant A2,890,247402,426
Events in quadrant B3,015,092411,062
Events in quadrant C3,155,830402,725
Events in quadrant D3,465,027385,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124243
B0129492
C0129052
D0146322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005150.249792%
B6005250.416320%
C6005510.849292%
D60051923.197336%

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 9291 6007 1 1 0.01% 0.02%
B 9291 6007 11 11 0.12% 0.18%
C 9291 6007 40 40 0.43% 0.67%
D 9291 6007 166 166 1.79% 2.76%

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 239528 1717.32 679 665 139.1
A 15 174 20295 141.13 679 665 139.1
A 13 254 8182 54.04 679 665 139.1
B 0 229 102985 783.4 674 658 130.6
B 0 213 84482 641.74 674 658 130.6
B 5 255 51729 390.99 674 658 130.6
C 0 10 264675 1691.67 662 666 156.1
C 15 214 257650 1646.66 662 666 156.1
C 0 207 46330 292.6 662 666 156.1
D 12 233 511869 3165.63 658 641 161.5
D 13 171 172186 1062.24 658 641 161.5
D 2 153 50617 309.46 658 641 161.5

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