ASTROSAT CZTI

Data Quality Report

Orbit 34813

Creation date: 2022-03-07T08:22:08.075444
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/AS1C07_005T01_9000004992_34813cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34813cztM0_level2_quad_clean.evt
Size (bytes)459,581,760105,454,080
Size438.3 MB 100.6 MB
Events in quadrant A3,499,500713,617
Events in quadrant B3,155,970727,438
Events in quadrant C3,106,092717,352
Events in quadrant D3,800,586667,621

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138433
B0124462
C0121792
D0150712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5250140.266667%
B52501302.476190%
C5250681.295238%
D52501282.438095%

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 7343 5251 4 4 0.05% 0.08%
B 7343 5251 95 95 1.29% 1.81%
C 7343 5251 54 54 0.74% 1.03%
D 7343 5251 93 93 1.27% 1.77%

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 0 247 588066 4448.35 665 655 132.1
A 15 169 185975 1403.39 665 655 132.1
A 10 83 48911 365.43 665 655 132.1
B 5 172 432567 3576.93 660 644 120.8
B 4 232 27776 224.69 660 644 120.8
B 5 200 21430 172.14 660 644 120.8
C 15 214 240169 1619.21 656 662 147.9
C 0 10 208418 1404.55 656 662 147.9
C 14 67 84013 563.5 656 662 147.9
D 8 195 721197 4635.69 648 631 155.4
D 2 249 338345 2172.65 648 631 155.4
D 13 249 69283 441.67 648 631 155.4

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