ASTROSAT CZTI

Data Quality Report

Orbit 25349

Creation date: 2024-06-27T19:16:39.088576
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_059T01_9000003706_25349cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25349cztM0_level2_quad_clean.evt
Size (bytes)558,264,960108,311,040
Size532.4 MB 103.3 MB
Events in quadrant A3,531,406719,358
Events in quadrant B3,633,032718,424
Events in quadrant C3,876,200688,616
Events in quadrant D5,376,010650,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151870
B0153840
C0160460
D0209120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7230460.636238%
B7230771.065007%
C72301692.337483%
D72304996.901798%

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 7615 7232 0 0 0.00% 0.00%
B 7615 7232 0 0 0.00% 0.00%
C 7615 7232 54 54 0.71% 0.75%
D 7615 7231 369 369 4.85% 5.10%

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 15 173 45347 245.83 903 883 180.9
A 13 254 11214 57.12 903 883 180.9
A 3 137 8297 40.99 903 883 180.9
B 3 112 68522 396.6 891 866 170.6
B 0 190 31461 179.35 891 866 170.6
B 0 229 21880 123.18 891 866 170.6
C 7 87 348201 1720.37 863 868 201.9
C 14 238 137025 674.4 863 868 201.9
C 9 54 17772 83.73 863 868 201.9
D 1 52 1261993 6109.48 853 829 206.4
D 12 233 426313 2061.18 853 829 206.4
D 8 195 242064 1168.62 853 829 206.4

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