ASTROSAT CZTI

Data Quality Report

Orbit 35105

Creation date: 2022-03-31T14:36:49.941569
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_015T01_9000005026_35105cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35105cztM0_level2_quad_clean.evt
Size (bytes)482,163,84091,414,080
Size459.8 MB 87.2 MB
Events in quadrant A3,210,576590,725
Events in quadrant B2,802,328629,614
Events in quadrant C2,937,542625,167
Events in quadrant D5,313,310572,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128243
B0113272
C0116672
D0193582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49993627.241448%
B4999711.420284%
C4999921.840368%
D49991693.380676%

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 7002 5000 274 274 3.91% 5.48%
B 7002 5000 42 42 0.60% 0.84%
C 7002 5000 62 62 0.89% 1.24%
D 7002 5000 130 130 1.86% 2.60%

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 853739 7215.41 584 572 118.2
A 10 83 78308 657.43 584 572 118.2
A 9 143 13197 106.77 584 572 118.2
B 5 172 265058 2310.74 603 589 114.5
B 5 255 68904 596.89 603 589 114.5
B 0 189 43354 373.65 603 589 114.5
C 0 10 254112 1841.22 594 598 137.7
C 15 214 209749 1519.02 594 598 137.7
C 4 254 75737 545.72 594 598 137.7
D 8 195 2539612 17673.38 583 567 143.7
D 13 249 197070 1367.79 583 567 143.7
D 12 6 84781 586.18 583 567 143.7

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