ASTROSAT CZTI

Data Quality Report

Orbit 34652

Creation date: 2022-02-24T11:10:38.127438
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/AS1T05_008T01_9000004956_34652cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34652cztM0_level2_quad_clean.evt
Size (bytes)456,016,32073,560,960
Size434.9 MB 70.2 MB
Events in quadrant A2,639,821473,024
Events in quadrant B3,207,098477,557
Events in quadrant C2,937,909460,947
Events in quadrant D4,660,128438,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110373
B0127832
C0116942
D0175492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A539150.092747%
B53911142.114636%
C5391841.558152%
D5391811.502504%

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 7303 5392 1 1 0.01% 0.02%
B 7303 5392 82 82 1.12% 1.52%
C 7303 5392 62 62 0.85% 1.15%
D 7303 5392 41 41 0.56% 0.76%

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 46267 343.17 665 653 132.9
A 9 143 11373 80.65 665 653 132.9
A 13 6 11155 79.01 665 653 132.9
B 5 172 550904 4483.04 651 637 122.7
B 4 171 57030 459.44 651 637 122.7
B 4 232 16569 129.8 651 637 122.7
C 15 214 227757 1576.05 629 633 144.1
C 0 10 218830 1514.1 629 633 144.1
C 14 67 20731 139.46 629 633 144.1
D 8 195 1931204 12297.29 636 618 157.0
D 2 250 120449 763.29 636 618 157.0
D 7 38 58911 371.31 636 618 157.0

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