ASTROSAT CZTI

Data Quality Report

Orbit 37549

Creation date: 2024-06-27T21:41:23.957532
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_051T01_9000005334_37549cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37549cztM0_level2_quad_clean.evt
Size (bytes)386,582,40064,918,080
Size368.7 MB 61.9 MB
Events in quadrant A2,587,924409,134
Events in quadrant B2,803,724420,730
Events in quadrant C2,882,245409,151
Events in quadrant D3,098,166380,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106453
B0112992
C0114362
D0124932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4931120.243358%
B4931400.811194%
C4931671.358751%
D49311392.818901%

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 6964 4932 7 7 0.10% 0.14%
B 6964 4932 29 29 0.42% 0.59%
C 6964 4932 74 74 1.06% 1.50%
D 6963 4931 136 136 1.95% 2.76%

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 286809 2432.06 585 575 117.7
A 12 189 14113 115.03 585 575 117.7
A 13 6 8591 68.11 585 575 117.7
B 15 32 81534 717.81 590 576 112.8
B 4 232 52761 462.69 590 576 112.8
B 0 245 41495 362.8 590 576 112.8
C 14 254 246073 1839.38 569 573 133.5
C 15 214 209427 1564.81 569 573 133.5
C 0 10 116731 870.3 569 573 133.5
D 2 249 376810 2768.42 556 540 135.9
D 1 52 180699 1325.53 556 540 135.9
D 13 249 96622 706.93 556 540 135.9

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