ASTROSAT CZTI

Data Quality Report

Orbit 17571

Creation date: 2024-06-27T17:38:07.653893
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/AS1A05_012T02_9000002602_17571cztM0_level2.evt modeM0/AS1A05_012T02_9000002602_17571cztM0_level2_quad_clean.evt
Size (bytes)1,199,479,680226,941,120
Size1.1 GB 216.4 MB
Events in quadrant A10,281,4671,477,617
Events in quadrant B7,772,1881,506,712
Events in quadrant C7,759,2041,423,303
Events in quadrant D9,444,8271,375,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407563
B0330713
C0328773
D0386723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1580513268.389750%
B158061360.860433%
C158061591.005947%
D158067544.770340%

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 19460 15808 900 900 4.62% 5.69%
B 19461 15809 9 9 0.05% 0.06%
C 19461 15809 9 9 0.05% 0.06%
D 19461 15809 694 694 3.57% 4.39%

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 14 237 3059793 8328.52 1855 1822 367.2
A 15 174 92172 246.07 1855 1822 367.2
A 0 226 16379 39.65 1855 1822 367.2
B 4 216 72512 197.11 1933 1887 358.3
B 7 220 71056 193.04 1933 1887 358.3
B 12 111 41909 111.7 1933 1887 358.3
C 14 238 290819 691.09 1831 1837 418.2
C 3 233 190490 451.16 1831 1837 418.2
C 0 207 92668 217.22 1831 1837 418.2
D 12 227 1663014 3781.31 1846 1792 439.3
D 13 189 520248 1180.12 1846 1792 439.3
D 1 52 87929 196.07 1846 1792 439.3

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