ASTROSAT CZTI

Data Quality Report

Orbit 25754

Creation date: 2024-06-27T19:21:07.616802
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/AS1A09_033T01_9000003750_25754cztM0_level2.evt modeM0/AS1A09_033T01_9000003750_25754cztM0_level2_quad_clean.evt
Size (bytes)1,258,084,800273,165,120
Size1.2 GB 260.5 MB
Events in quadrant A8,616,9511,775,533
Events in quadrant B8,822,2121,831,208
Events in quadrant C9,124,0631,754,598
Events in quadrant D10,374,4581,725,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362650
B0368600
C0376440
D0419270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17228670.388902%
B172291350.783563%
C172292261.311742%
D172292291.329154%

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 20963 17232 0 0 0.00% 0.00%
B 20964 17233 0 0 0.00% 0.00%
C 20964 17232 9 9 0.04% 0.05%
D 20964 17232 180 180 0.86% 1.04%

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 13 254 23404 48.08 2236 2195 441.1
A 3 137 19542 39.33 2236 2195 441.1
A 0 226 18849 37.76 2236 2195 441.1
B 12 111 49918 114.81 2235 2184 415.8
B 11 111 45567 104.34 2235 2184 415.8
B 14 111 41919 95.57 2235 2184 415.8
C 14 238 349383 688.77 2186 2206 504.1
C 3 233 217326 426.78 2186 2206 504.1
C 14 225 22657 40.57 2186 2206 504.1
D 7 80 1122998 2120.56 2200 2153 528.6
D 13 104 315790 593.38 2200 2153 528.6
D 8 195 285231 535.56 2200 2153 528.6

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