ASTROSAT CZTI

Data Quality Report

Orbit 42700

Creation date: 2024-06-27T22:43:12.386108
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/AS1A05_013T01_9000005822_42700cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42700cztM0_level2_quad_clean.evt
Size (bytes)871,824,960251,452,800
Size831.4 MB 239.8 MB
Events in quadrant A8,427,6121,675,316
Events in quadrant B7,059,6221,706,100
Events in quadrant C7,396,3521,638,096
Events in quadrant D8,178,0501,516,409

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341804
B0319924
C0320874
D0353384

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15614530.339439%
B15614470.301012%
C15614300.192135%
D156141430.915845%

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 19822 15617 22 22 0.11% 0.14%
B 19822 15617 30 30 0.15% 0.19%
C 19822 15617 21 21 0.11% 0.13%
D 19822 15617 146 146 0.74% 0.93%

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 1550394 4458.84 1700 1665 347.3
A 2 79 122031 346.54 1700 1665 347.3
A 15 237 59348 166.07 1700 1665 347.3
B 5 172 75523 225.78 1688 1641 327.2
B 0 229 70890 211.62 1688 1641 327.2
B 5 255 64221 191.24 1688 1641 327.2
C 15 214 646830 1674.84 1649 1656 385.2
C 14 254 111403 284.9 1649 1656 385.2
C 8 79 60470 152.68 1649 1656 385.2
D 1 52 649062 1626.34 1648 1604 398.1
D 12 233 329223 822.94 1648 1604 398.1
D 10 199 213593 532.49 1648 1604 398.1

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