ASTROSAT CZTI

Data Quality Report

Orbit 16671

Creation date: 2024-06-27T17:25:56.617101
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_078T01_9000002462_16671cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16671cztM0_level2_quad_clean.evt
Size (bytes)999,048,960219,035,520
Size952.8 MB 208.9 MB
Events in quadrant A7,745,1991,454,797
Events in quadrant B6,197,3381,516,510
Events in quadrant C5,481,0941,469,621
Events in quadrant D10,049,7321,391,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308303
B0256262
C0241002
D0377012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115937246.245148%
B115931090.940223%
C115931541.328388%
D115938016.909342%

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 13669 11596 516 516 3.77% 4.45%
B 13669 11595 6 6 0.04% 0.05%
C 13669 11596 0 0 0.00% 0.00%
D 13669 11596 649 649 4.75% 5.60%

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 15 174 2217344 8116.09 1362 1331 273.0
A 9 143 283014 1031.65 1362 1331 273.0
A 0 226 12075 39.35 1362 1331 273.0
B 15 35 267000 1028.51 1384 1348 258.3
B 0 229 227338 874.95 1384 1348 258.3
B 0 189 147284 565.01 1384 1348 258.3
C 14 238 208056 677.38 1329 1337 305.2
C 3 233 89025 287.33 1329 1337 305.2
C 13 61 9626 27.16 1329 1337 305.2
D 1 52 4146255 12894.92 1327 1287 321.4
D 10 199 549510 1705.51 1327 1287 321.4
D 10 70 190181 587.65 1327 1287 321.4

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