ASTROSAT CZTI

Data Quality Report

Orbit 35897

Creation date: 2022-06-08T23:10:48.509262
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_080T01_9000005146_35897cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35897cztM0_level2_quad_clean.evt
Size (bytes)506,039,04080,000,640
Size482.6 MB 76.3 MB
Events in quadrant A2,766,855536,513
Events in quadrant B2,871,744537,835
Events in quadrant C2,990,379513,697
Events in quadrant D6,341,288467,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0180
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01070
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01131970
B011704104
C011950101
D022747296

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525660.114155%
B5239280.534453%
C5242861.640595%
D521899219.011115%

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 7212 5287 0 0 0.00% 0.00%
B 7212 5279 17 17 0.24% 0.32%
C 7212 5276 68 68 0.94% 1.29%
D 7212 5277 895 895 12.41% 16.96%

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 163416 1208.21 669 660 134.7
A 13 254 8920 61.32 669 660 134.7
A 3 137 6392 42.55 669 660 134.7
B 5 172 120501 957.12 654 640 125.2
B 0 213 73425 581.21 654 640 125.2
B 5 255 58909 465.29 654 640 125.2
C 0 10 257689 1776.05 629 635 144.7
C 15 214 219521 1512.34 629 635 144.7
C 0 207 57794 394.93 629 635 144.7
D 12 227 1622568 11167.43 583 567 145.2
D 10 118 1321604 9095.3 583 567 145.2
D 2 250 416536 2863.94 583 567 145.2

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