ASTROSAT CZTI

Data Quality Report

Orbit 33643

Creation date: 2024-06-27T20:51:00.492483
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/AS1T04_076T01_9000004810_33643cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33643cztM0_level2_quad_clean.evt
Size (bytes)423,835,20082,180,800
Size404.2 MB 78.4 MB
Events in quadrant A2,365,434543,461
Events in quadrant B3,585,187538,345
Events in quadrant C3,254,668538,320
Events in quadrant D3,283,782510,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103323
B0139452
C0128722
D0130192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510870.137040%
B51082825.520752%
C51081142.231793%
D51081122.192639%

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 7051 5109 0 0 0.00% 0.00%
B 7051 5108 223 223 3.16% 4.37%
C 7051 5108 92 92 1.30% 1.80%
D 7051 5109 106 106 1.50% 2.07%

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 13 254 7641 58.02 608 597 121.4
A 10 83 7526 57.07 608 597 121.4
A 13 6 6999 52.73 608 597 121.4
B 5 172 898305 7822.45 597 582 114.8
B 0 213 73174 632.54 597 582 114.8
B 0 219 53215 458.63 597 582 114.8
C 0 10 298776 2177.87 590 595 136.9
C 3 233 277231 2020.51 590 595 136.9
C 15 214 236209 1720.89 590 595 136.9
D 8 195 404641 2775.33 583 568 145.6
D 13 249 239156 1638.72 583 568 145.6
D 7 38 129657 886.63 583 568 145.6

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