ASTROSAT CZTI

Data Quality Report

Orbit 50739

Creation date: 2025-02-13T23:09:07.438644
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_001T01_9000006450_50739cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50739cztM0_level2_quad_clean.evt
Size (bytes)562,786,56089,003,520
Size536.7 MB 84.9 MB
Events in quadrant A6,608,874558,670
Events in quadrant B3,559,004652,153
Events in quadrant C4,564,731565,991
Events in quadrant D5,627,932492,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02403212
B01470213
C0177651
D0208631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609264410.571241%
B60911923.152192%
C60952634.315012%
D609570911.632486%

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 7254 6094 573 573 7.90% 9.40%
B 7254 6094 116 116 1.60% 1.90%
C 7255 6095 218 218 3.00% 3.58%
D 7254 6094 642 642 8.85% 10.53%

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 4 4 3037587 18564.61 650 632 163.6
A 6 195 557885 3406.43 650 632 163.6
A 14 254 122573 745.41 650 632 163.6
B 0 172 379042 2694.47 663 639 140.4
B 7 0 75213 531.01 663 639 140.4
B 0 213 69430 489.84 663 639 140.4
C 12 247 426753 2422.02 647 641 175.9
C 3 233 363909 2064.82 647 641 175.9
C 13 3 254168 1441.05 647 641 175.9
D 15 174 945519 5506.58 618 596 171.6
D 15 108 673927 3923.87 618 596 171.6
D 1 47 471158 2742.22 618 596 171.6

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