ASTROSAT CZTI

Data Quality Report

Orbit 34384

Creation date: 2022-02-06T09:24:47.628796
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/AS1A05_085T01_9000004910_34384cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34384cztM0_level2_quad_clean.evt
Size (bytes)774,216,00069,200,640
Size738.3 MB 66.0 MB
Events in quadrant A2,864,505456,138
Events in quadrant B3,748,418445,431
Events in quadrant C6,152,563442,645
Events in quadrant D10,260,113313,778

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126323
B0151982
C0227862
D0348442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A625180.127980%
B62512684.287314%
C625165310.446329%
D6251207833.242681%

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 8997 6253 0 0 0.00% 0.00%
B 8997 6253 191 191 2.12% 3.05%
C 8997 6253 583 583 6.48% 9.32%
D 8997 6253 2058 2058 22.87% 32.91%

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 33743 225.55 723 707 146.5
A 9 143 21161 139.65 723 707 146.5
A 13 6 13274 85.8 723 707 146.5
B 5 172 841450 6117.29 709 690 137.4
B 5 200 35808 255.52 709 690 137.4
B 0 190 24815 175.53 709 690 137.4
C 4 254 2820520 18017.52 670 675 156.5
C 15 214 250725 1597.71 670 675 156.5
C 14 67 227577 1449.8 670 675 156.5
D 7 223 3495573 24619.88 578 562 142.0
D 2 249 2744173 19326.8 578 562 142.0
D 8 195 1294642 9115.88 578 562 142.0

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