ASTROSAT CZTI

Data Quality Report

Orbit 26850

Creation date: 2024-06-27T19:33:38.991891
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_224T01_9000003868_26850cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26850cztM0_level2_quad_clean.evt
Size (bytes)530,553,60066,666,240
Size506.0 MB 63.6 MB
Events in quadrant A3,476,404409,116
Events in quadrant B3,427,498420,772
Events in quadrant C3,373,812407,962
Events in quadrant D5,385,177362,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139300
B0137170
C0135270
D0200530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5983180.300852%
B5983731.220124%
C5983671.119840%
D59845178.639706%

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 7373 5984 1 1 0.01% 0.02%
B 7373 5984 24 24 0.33% 0.40%
C 7373 5984 9 9 0.12% 0.15%
D 7374 5984 409 409 5.55% 6.83%

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 0 13 258422 1593.73 826 815 161.6
A 12 96 32061 193.31 826 815 161.6
A 13 254 9381 53.0 826 815 161.6
B 10 246 148951 985.2 828 812 150.4
B 15 33 23649 151.88 828 812 150.4
B 12 111 17550 111.31 828 812 150.4
C 14 238 133050 708.18 811 818 186.7
C 7 87 75262 398.69 811 818 186.7
C 2 16 6625 31.1 811 818 186.7
D 7 80 2188301 11898.41 783 768 183.9
D 1 52 161477 874.13 783 768 183.9
D 2 250 68048 365.95 783 768 183.9

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