ASTROSAT CZTI

Data Quality Report

Orbit 43488

Creation date: 2024-06-27T22:52:34.711672
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_018T01_9000005874_43488cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43488cztM0_level2_quad_clean.evt
Size (bytes)362,350,08087,226,560
Size345.6 MB 83.2 MB
Events in quadrant A3,008,263595,949
Events in quadrant B2,711,257611,371
Events in quadrant C2,455,987593,584
Events in quadrant D4,847,349488,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120852
B0113822
C0103842
D0179202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5013200.398963%
B5013430.857770%
C501340.079793%
D501360612.088570%

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 7075 5014 10 10 0.14% 0.20%
B 7075 5014 38 38 0.54% 0.76%
C 7075 5014 4 4 0.06% 0.08%
D 7074 5013 623 623 8.81% 12.43%

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 595328 5341.51 549 539 111.4
A 15 222 191521 1715.12 549 539 111.4
A 15 237 59129 526.17 549 539 111.4
B 0 189 290009 2762.23 554 540 104.8
B 0 245 76688 726.63 554 540 104.8
B 15 36 53196 502.46 554 540 104.8
C 15 214 206070 1608.39 551 556 127.8
C 3 233 79311 616.35 551 556 127.8
C 12 2 8140 59.35 551 556 127.8
D 1 52 1324345 10561.95 514 500 125.3
D 2 16 534434 4259.85 514 500 125.3
D 13 249 317562 2529.6 514 500 125.3

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