ASTROSAT CZTI

Data Quality Report

Orbit 40578

Creation date: 2024-06-27T22:17:48.363499
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_054T02_9000005550_40578cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40578cztM0_level2_quad_clean.evt
Size (bytes)318,654,72083,292,480
Size303.9 MB 79.4 MB
Events in quadrant A2,882,470585,022
Events in quadrant B3,240,867582,362
Events in quadrant C2,490,621556,742
Events in quadrant D2,795,674451,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115643
B0127472
C0104262
D0116592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4942160.323756%
B49421633.298260%
C4942200.404694%
D494274215.014164%

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 7065 4943 0 0 0.00% 0.00%
B 7065 4943 143 143 2.02% 2.89%
C 7065 4943 15 15 0.21% 0.30%
D 7065 4943 78 78 1.10% 1.58%

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 473367 4166.76 559 549 113.5
A 12 189 146199 1283.56 559 549 113.5
A 15 191 58983 514.96 559 549 113.5
B 0 190 857134 8246.51 547 533 103.9
B 3 112 64246 613.37 547 533 103.9
B 0 230 55970 533.69 547 533 103.9
C 15 214 221093 1753.62 538 541 125.8
C 14 254 98745 780.82 538 541 125.8
C 0 10 63222 498.38 538 541 125.8
D 12 227 226619 1842.51 501 487 122.7
D 12 191 188209 1529.55 501 487 122.7
D 10 34 151580 1231.1 501 487 122.7

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