ASTROSAT CZTI

Data Quality Report

Orbit 36782

Creation date: 2024-06-27T21:31:34.915236
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_083T01_9000005242_36782cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36782cztM0_level2_quad_clean.evt
Size (bytes)540,604,80045,302,400
Size515.6 MB 43.2 MB
Events in quadrant A2,833,928273,562
Events in quadrant B5,955,090227,009
Events in quadrant C3,231,599261,144
Events in quadrant D3,997,763242,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113483
B0211722
C0125072
D0152612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5227100.191314%
B522796318.423570%
C52271312.506218%
D52273256.217716%

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 7320 5228 3 3 0.04% 0.06%
B 7320 5228 771 771 10.53% 14.75%
C 7320 5228 118 118 1.61% 2.26%
D 7320 5228 290 290 3.96% 5.55%

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 213991 1611.8 660 647 132.4
A 9 143 38125 283.14 660 647 132.4
A 7 16 19066 139.15 660 647 132.4
B 12 1 3249165 27830.9 623 609 116.7
B 4 171 123403 1052.0 623 609 116.7
B 0 213 37211 313.58 623 609 116.7
C 14 254 488705 3365.81 627 631 145.0
C 15 214 219319 1508.09 627 631 145.0
C 0 10 33823 228.9 627 631 145.0
D 13 249 494565 3340.83 614 598 147.9
D 12 233 332895 2247.41 614 598 147.9
D 13 171 201305 1357.43 614 598 147.9

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