ASTROSAT CZTI

Data Quality Report

Orbit 11176

Creation date: 2024-06-27T16:09:23.656183
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/AS1A04_049T01_9000001632_11176cztM0_level2.evt modeM0/AS1A04_049T01_9000001632_11176cztM0_level2_quad_clean.evt
Size (bytes)1,957,317,120282,107,520
Size1.8 GB 269.0 MB
Events in quadrant A16,753,5051,715,855
Events in quadrant B17,354,8241,758,358
Events in quadrant C9,739,1721,866,854
Events in quadrant D13,981,2151,721,318

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0617
B0606
C0605
D0584

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045515
B045612
C045616
D045416

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0674503307
B0689462882
C0454521366
D0588432352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2147115087.023427%
B2147020689.632045%
C21559600.278306%
D215117623.542374%

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 28279 21587 897 897 3.17% 4.16%
B 28279 21614 1207 1207 4.27% 5.58%
C 28279 21696 2 2 0.01% 0.01%
D 28278 21642 578 578 2.04% 2.67%

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 8 5 3181455 6533.91 2442 2391 486.5
A 14 238 2084794 4279.95 2442 2391 486.5
A 8 15 1783364 3660.42 2442 2391 486.5
B 4 239 4774538 10554.1 2464 2408 452.2
B 10 16 1007367 2222.58 2464 2408 452.2
B 10 245 578416 1273.91 2464 2408 452.2
C 14 234 28607 45.87 2488 2504 569.1
C 13 61 18493 28.1 2488 2504 569.1
C 1 3 6300 6.67 2488 2504 569.1
D 10 157 800033 1352.7 2395 2339 589.7
D 10 253 796147 1346.12 2395 2339 589.7
D 13 152 610009 1030.47 2395 2339 589.7

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