ASTROSAT CZTI

Data Quality Report

Orbit 46676

Creation date: 2024-06-27T23:26:11.488220
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_092T16_9000006250_46676cztM0_level2.fits modeM0/AS1A13_092T16_9000006250_46676cztM0_level2_quad_clean.evt
Size (bytes)386,026,56079,683,840
Size368.1 MB 76.0 MB
Events in quadrant A5,049,507511,454
Events in quadrant B3,504,197531,381
Events in quadrant C2,198,576541,317
Events in quadrant D3,151,501480,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181671
B0138071
C0102411
D0128561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49613126.289055%
B49613196.430155%
C4961130.262044%
D49611503.023584%

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 6141 4962 259 259 4.22% 5.22%
B 6141 4962 208 208 3.39% 4.19%
C 6141 4962 4 4 0.07% 0.08%
D 6141 4962 110 110 1.79% 2.22%

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 2488366 22133.47 534 524 112.4
A 15 235 442947 3936.08 534 524 112.4
A 13 6 14572 124.98 534 524 112.4
B 15 201 609366 5771.83 540 525 105.5
B 12 3 353447 3345.71 540 525 105.5
B 4 171 198457 1876.4 540 525 105.5
C 1 241 45245 351.25 539 542 127.3
C 12 250 13626 102.81 539 542 127.3
C 14 254 10562 78.73 539 542 127.3
D 1 52 433728 3169.23 529 511 136.7
D 13 249 209652 1529.98 529 511 136.7
D 12 128 146913 1071.01 529 511 136.7

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