ASTROSAT CZTI

Data Quality Report

Orbit 36172

Creation date: 2022-06-07T13:56:08.494486
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_059T08_9000005160_36172cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36172cztM0_level2_quad_clean.evt
Size (bytes)436,210,56079,608,960
Size416.0 MB 75.9 MB
Events in quadrant A2,598,632514,767
Events in quadrant B3,201,085543,948
Events in quadrant C3,536,248509,699
Events in quadrant D3,525,450481,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109412
B0128252
C0135832
D0139222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5140150.291829%
B51401102.140078%
C51402053.988327%
D51402274.416342%

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 8785 5142 4 4 0.05% 0.08%
B 8785 5142 56 56 0.64% 1.09%
C 8785 5142 168 168 1.91% 3.27%
D 8785 5142 190 190 2.16% 3.70%

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 158130 1269.49 618 607 124.1
A 9 143 25162 197.89 618 607 124.1
A 8 144 20500 160.32 618 607 124.1
B 5 172 281690 2363.04 619 603 119.0
B 4 171 272687 2287.35 619 603 119.0
B 0 190 75030 625.69 619 603 119.0
C 15 208 482263 3398.75 603 608 141.7
C 0 10 396396 2792.84 603 608 141.7
C 15 214 225636 1587.89 603 608 141.7
D 13 249 408225 2793.77 598 584 145.9
D 2 250 290311 1985.65 598 584 145.9
D 12 6 228392 1561.29 598 584 145.9

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