ASTROSAT CZTI

Data Quality Report

Orbit 40796

Creation date: 2024-06-27T22:20:36.835039
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_095T02_9000005568_40796cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40796cztM0_level2_quad_clean.evt
Size (bytes)561,985,920160,056,000
Size536.0 MB 152.6 MB
Events in quadrant A5,358,5891,064,186
Events in quadrant B4,869,5541,109,194
Events in quadrant C4,758,4831,059,532
Events in quadrant D5,081,961958,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215404
B0208843
C0199973
D0221883

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9458580.613237%
B9458850.898710%
C9458530.560372%
D94591241.310921%

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 13614 9460 58 58 0.43% 0.61%
B 13614 9460 48 48 0.35% 0.51%
C 13614 9460 52 52 0.38% 0.55%
D 13615 9461 106 106 0.78% 1.12%

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 836688 3880.73 1053 1032 215.3
A 6 10 268693 1243.0 1053 1032 215.3
A 12 189 104836 482.06 1053 1032 215.3
B 7 202 358318 1761.0 1052 1023 202.9
B 15 85 160118 784.13 1052 1023 202.9
B 5 255 133595 653.41 1052 1023 202.9
C 15 214 403801 1698.49 1028 1037 237.1
C 0 10 163367 684.56 1028 1037 237.1
C 3 233 122692 513.03 1028 1037 237.1
D 13 249 401080 1612.48 1015 986 248.1
D 2 249 356087 1431.15 1015 986 248.1
D 13 171 149637 599.1 1015 986 248.1

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