ASTROSAT CZTI

Data Quality Report

Orbit 46890

Creation date: 2024-06-27T23:29:09.326848
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/AS1A13_068T13_9000006278_46890cztM0_level2.fits modeM0/AS1A13_068T13_9000006278_46890cztM0_level2_quad_clean.evt
Size (bytes)753,621,120104,253,120
Size718.7 MB 99.4 MB
Events in quadrant A7,251,293723,001
Events in quadrant B11,798,603512,417
Events in quadrant C3,244,800750,487
Events in quadrant D5,039,356664,640

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261272
B0401072
C0150322
D0199842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72664916.757501%
B7266322244.343518%
C72661301.789155%
D72664215.794110%

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 8761 7266 151 151 1.72% 2.08%
B 8761 7266 2143 2143 24.46% 29.49%
C 8761 7267 8 8 0.09% 0.11%
D 8761 7267 265 265 3.02% 3.65%

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 3721478 22298.85 800 780 166.9
A 13 248 381701 2282.93 800 780 166.9
A 15 235 17081 97.69 800 780 166.9
B 3 112 8450883 58944.43 716 691 143.4
B 4 171 199547 1387.12 716 691 143.4
B 15 36 119097 825.94 716 691 143.4
C 14 254 55331 288.07 801 802 189.3
C 15 208 49679 258.21 801 802 189.3
C 3 233 14045 69.96 801 802 189.3
D 13 249 731007 3719.98 788 762 196.3
D 2 249 436637 2220.41 788 762 196.3
D 13 171 429897 2186.08 788 762 196.3

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