ASTROSAT CZTI

Data Quality Report

Orbit 17739

Creation date: 2024-06-27T17:40:14.896709
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_070T01_9000002632_17739cztM0_level2.evt modeM0/AS1T03_070T01_9000002632_17739cztM0_level2_quad_clean.evt
Size (bytes)207,302,40051,494,400
Size197.7 MB 49.1 MB
Events in quadrant A1,328,703342,960
Events in quadrant B1,467,544343,977
Events in quadrant C1,299,910334,984
Events in quadrant D1,978,969326,280

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059810
B063180
C059230
D078650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A295600.000000%
B2956180.608931%
C295670.236806%
D29561133.822733%

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 2956 2956 0 0 0.00% 0.00%
B 2956 2956 14 14 0.47% 0.47%
C 2956 2956 0 0 0.00% 0.00%
D 2956 2956 89 89 3.01% 3.01%

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 34413 494.97 333 326 68.9
A 14 237 9342 130.92 333 326 68.9
A 0 226 2909 37.51 333 326 68.9
B 7 220 112025 1739.52 327 318 64.2
B 0 219 19928 305.37 327 318 64.2
B 10 245 19533 299.22 327 318 64.2
C 14 238 48937 646.16 315 316 75.2
C 5 218 17494 228.29 315 316 75.2
C 3 233 5414 67.75 315 316 75.2
D 7 223 376583 4376.17 317 310 86.0
D 10 70 188043 2183.39 317 310 86.0
D 1 52 122457 1420.61 317 310 86.0

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