ASTROSAT CZTI

Data Quality Report

Orbit 33881

Creation date: 2024-06-27T20:53:37.788853
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_003T10_9000004838_33881cztM0_level2.evt modeM0/AS1A11_003T10_9000004838_33881cztM0_level2_quad_clean.evt
Size (bytes)450,812,16076,443,840
Size429.9 MB 72.9 MB
Events in quadrant A2,555,741495,344
Events in quadrant B3,549,243488,089
Events in quadrant C3,075,891486,259
Events in quadrant D4,096,423458,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112283
B0141902
C0123152
D0157952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A553240.072307%
B55322163.904555%
C5532851.536515%
D55332915.259353%

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 7115 5533 0 0 0.00% 0.00%
B 7115 5533 124 124 1.74% 2.24%
C 7115 5533 53 53 0.74% 0.96%
D 7116 5534 254 254 3.57% 4.59%

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 15 169 40993 313.38 642 629 128.8
A 13 6 21287 160.39 642 629 128.8
A 10 83 11740 86.26 642 629 128.8
B 5 172 442202 3654.03 633 616 120.8
B 5 255 340714 2814.24 633 616 120.8
B 4 251 182214 1502.68 633 616 120.8
C 0 10 241956 1667.19 628 633 144.7
C 15 214 240657 1658.22 628 633 144.7
C 0 207 63413 433.72 628 633 144.7
D 12 235 734375 4805.4 618 599 152.7
D 2 250 378603 2475.5 618 599 152.7
D 8 195 276273 1805.35 618 599 152.7

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