ASTROSAT CZTI

Data Quality Report

Orbit 40579

Creation date: 2024-06-27T22:17:49.297016
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/AS1A12_054T02_9000005550_40579cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40579cztM0_level2_quad_clean.evt
Size (bytes)291,749,76083,407,680
Size278.2 MB 79.5 MB
Events in quadrant A2,848,132581,448
Events in quadrant B2,605,042589,229
Events in quadrant C2,445,817557,693
Events in quadrant D2,500,188438,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115733
B0110842
C0105282
D0108412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512060.117188%
B5120320.625000%
C5120110.214844%
D512188617.301308%

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 7093 5121 1 1 0.01% 0.02%
B 7093 5121 18 18 0.25% 0.35%
C 7093 5121 9 9 0.13% 0.18%
D 7094 5122 14 14 0.20% 0.27%

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 481549 4217.24 561 551 114.1
A 12 189 99477 867.35 561 551 114.1
A 15 191 52763 457.78 561 551 114.1
B 0 190 243159 2270.67 552 537 106.9
B 3 112 71926 668.12 552 537 106.9
B 5 255 38453 354.85 552 537 106.9
C 15 214 227147 1768.09 544 546 128.2
C 14 254 52847 408.09 544 546 128.2
C 0 10 29473 225.71 544 546 128.2
D 12 191 246032 2022.57 497 483 121.4
D 2 250 83489 683.72 497 483 121.4
D 1 47 50277 410.15 497 483 121.4

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