ASTROSAT CZTI

Data Quality Report

Orbit 08982

Creation date: 2024-06-27T15:39:51.385182
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/AS1A03_107T01_9000001246_08982cztM0_level2.evt modeM0/AS1A03_107T01_9000001246_08982cztM0_level2_quad_clean.evt
Size (bytes)617,261,760113,166,720
Size588.7 MB 107.9 MB
Events in quadrant A4,219,673718,609
Events in quadrant B4,234,679728,624
Events in quadrant C5,691,537706,687
Events in quadrant D3,986,833698,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01781929
B01836557
C02278968
D01796064

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8279200.241575%
B82721351.632012%
C82725987.229207%
D8269330.399081%

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 8850 8291 6 6 0.07% 0.07%
B 8850 8291 53 53 0.60% 0.64%
C 8850 8289 380 380 4.29% 4.58%
D 8850 8291 35 35 0.40% 0.42%

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 582229 3034.66 937 917 191.6
A 5 16 25634 129.03 937 917 191.6
A 0 226 8820 41.26 937 917 191.6
B 0 85 424282 2325.05 946 923 182.1
B 4 173 57428 310.32 946 923 182.1
B 0 219 37768 202.35 946 923 182.1
C 4 254 2187915 10548.49 894 897 207.3
C 4 238 16011 72.9 894 897 207.3
C 13 61 6738 28.17 894 897 207.3
D 13 29 214280 882.7 905 884 241.8
D 2 14 124367 510.78 905 884 241.8
D 1 52 75980 310.63 905 884 241.8

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