ASTROSAT CZTI

Data Quality Report

Orbit 41924

Creation date: 2024-06-27T22:34:32.824149
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/AS1T05_118T01_9000005718_41924cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41924cztM0_level2_quad_clean.evt
Size (bytes)591,661,44077,230,080
Size564.3 MB 73.7 MB
Events in quadrant A3,814,676598,538
Events in quadrant B3,155,642631,700
Events in quadrant C3,226,969565,917
Events in quadrant D11,316,285191,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145662
B0125812
C0122542
D0369846

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49942174.345214%
B49941042.082499%
C49942785.566680%
D4993357271.540156%

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 7116 4995 158 158 2.22% 3.16%
B 7116 4995 57 57 0.80% 1.14%
C 7116 4995 267 267 3.75% 5.35%
D 7115 4994 3600 3600 50.60% 72.09%

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 14 24 757719 6387.16 578 567 118.5
A 10 83 542270 4569.68 578 567 118.5
A 14 250 116529 978.23 578 567 118.5
B 0 229 477062 4351.11 576 562 109.5
B 0 190 163343 1486.42 576 562 109.5
B 7 202 104642 950.4 576 562 109.5
C 0 10 842065 6717.35 542 544 125.3
C 15 214 198179 1577.6 542 544 125.3
C 0 15 44213 348.58 542 544 125.3
D 12 79 7739993 83205.15 383 372 93.0
D 13 249 1413350 15190.28 383 372 93.0
D 1 52 279969 3005.82 383 372 93.0

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