ASTROSAT CZTI

Data Quality Report

Orbit 38175

Creation date: 2024-06-27T21:49:21.289380
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/AS1A07_145T01_9000005370_38175cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38175cztM0_level2_quad_clean.evt
Size (bytes)501,675,84081,305,280
Size478.4 MB 77.5 MB
Events in quadrant A2,742,096612,385
Events in quadrant B2,457,456631,831
Events in quadrant C2,633,600603,310
Events in quadrant D10,332,105250,334

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112093
B0107352
C0108982
D0342922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5204150.288240%
B5204160.307456%
C5204170.326672%
D5204303558.320523%

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 7117 5204 6 6 0.08% 0.12%
B 7117 5205 5 5 0.07% 0.10%
C 7116 5204 13 13 0.18% 0.25%
D 7116 5203 3220 3220 45.25% 61.89%

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 361099 3002.27 595 584 120.1
A 12 189 36681 300.61 595 584 120.1
A 9 143 32356 264.59 595 584 120.1
B 4 171 40939 350.57 592 576 115.1
B 15 85 37116 317.37 592 576 115.1
B 0 229 15717 131.51 592 576 115.1
C 15 214 218631 1623.65 575 580 134.3
C 14 254 81804 604.81 575 580 134.3
C 3 233 34949 255.92 575 580 134.3
D 12 227 8242316 75552.0 446 435 109.1
D 12 235 123383 1127.04 446 435 109.1
D 13 249 70014 637.82 446 435 109.1

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