ASTROSAT CZTI

Data Quality Report

Orbit 16585

Creation date: 2024-06-27T17:24:42.047257
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/AS1T03_020T01_9000002444_16585cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16585cztM0_level2_quad_clean.evt
Size (bytes)234,276,48025,476,480
Size223.4 MB 24.3 MB
Events in quadrant A1,906,595147,614
Events in quadrant B1,395,327158,695
Events in quadrant C2,424,648147,248
Events in quadrant D1,211,280151,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072091
B057031
C088641
D051331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22912028.817110%
B2291351.527717%
C22911245.412484%
D229160.261894%

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 2292 2292 99 99 4.32% 4.32%
B 2292 2292 17 17 0.74% 0.74%
C 2292 2292 12 12 0.52% 0.52%
D 2292 2292 2 2 0.09% 0.09%

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 15 174 657583 10767.03 295 289 61.0
A 9 143 111253 1817.68 295 289 61.0
A 11 29 2992 44.28 295 289 61.0
B 15 35 44640 780.3 297 291 56.8
B 0 229 42261 738.45 297 291 56.8
B 0 197 36266 632.97 297 291 56.8
C 3 233 1292734 19841.13 276 278 65.1
C 14 238 43257 659.79 276 278 65.1
C 7 247 7864 116.46 276 278 65.1
D 5 222 44110 615.4 288 279 71.2
D 10 70 37055 516.35 288 279 71.2
D 7 38 22485 311.78 288 279 71.2

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