ASTROSAT CZTI

Data Quality Report

Orbit 40262

Creation date: 2024-06-27T22:14:20.710658
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_056T02_9000005538_40262cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40262cztM0_level2_quad_clean.evt
Size (bytes)123,304,32029,378,880
Size117.6 MB 28.0 MB
Events in quadrant A1,246,193198,981
Events in quadrant B881,061205,923
Events in quadrant C1,245,071185,074
Events in quadrant D1,051,890170,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048652
B037221
C047741
D043631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1767351.980758%
B1767150.848896%
C17671317.413696%
D17671488.375778%

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 3200 1768 22 22 0.69% 1.24%
B 3200 1768 10 10 0.31% 0.57%
C 3200 1768 116 116 3.62% 6.56%
D 3200 1768 23 23 0.72% 1.30%

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 190630 4303.27 204 199 44.3
A 13 248 106755 2407.9 204 199 44.3
A 6 10 91986 2074.16 204 199 44.3
B 4 171 39808 934.1 205 199 42.4
B 0 245 21321 498.12 205 199 42.4
B 5 255 8718 200.9 205 199 42.4
C 14 254 401735 8668.84 192 193 46.3
C 15 214 76221 1641.36 192 193 46.3
C 15 208 12473 265.11 192 193 46.3
D 13 249 248962 5241.74 187 181 47.5
D 12 0 40623 852.1 187 181 47.5
D 9 19 13506 280.75 187 181 47.5

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