ASTROSAT CZTI

Data Quality Report

Orbit 00944

Creation date: 2024-06-27T14:05:06.518886
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/AS1P01_998T01_9000000188_00944cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00944cztM0_level2_quad_clean.evt
Size (bytes)1,227,931,200109,811,520
Size1.1 GB 104.7 MB
Events in quadrant A8,911,644723,075
Events in quadrant B9,108,640715,828
Events in quadrant C8,992,722705,036
Events in quadrant D9,696,993678,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316200
B0321960
C0318000
D0339230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A723260.082965%
B7232300.414823%
C7232200.276549%
D72312523.484995%

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 7687 7233 269 269 3.50% 3.72%
B 7687 7233 369 369 4.80% 5.10%
C 7687 7233 329 329 4.28% 4.55%
D 7686 7232 903 903 11.75% 12.49%

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 14 170 446579 843.12 2201 2219 527.0
A 12 189 10753 16.19 2201 2219 527.0
A 11 79 8694 12.29 2201 2219 527.0
B 15 22 82637 147.62 2310 2319 544.1
B 5 191 50435 88.44 2310 2319 544.1
B 8 234 47497 83.04 2310 2319 544.1
C 15 241 383498 637.48 2138 2212 598.1
C 10 34 133703 219.84 2138 2212 598.1
C 9 144 76170 123.65 2138 2212 598.1
D 12 188 1287309 2064.76 2027 2097 622.5
D 1 4 633816 1014.89 2027 2097 622.5
D 13 252 179798 285.49 2027 2097 622.5

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