ASTROSAT CZTI

Data Quality Report

Orbit 26649

Creation date: 2024-06-27T19:31:22.378476
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_145T01_9000003848_26649cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26649cztM0_level2_quad_clean.evt
Size (bytes)560,692,80081,002,880
Size534.7 MB 77.3 MB
Events in quadrant A3,763,695523,085
Events in quadrant B3,540,710524,334
Events in quadrant C3,490,592499,543
Events in quadrant D5,758,343465,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151830
B0141270
C0139650
D0213950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6311911.441927%
B6312821.299113%
C63121151.821926%
D63125328.428390%

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 7581 6312 3 3 0.04% 0.05%
B 7582 6313 0 0 0.00% 0.00%
C 7582 6313 4 4 0.05% 0.06%
D 7582 6312 357 357 4.71% 5.66%

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 333489 1880.3 890 877 176.9
A 13 254 10077 52.01 890 877 176.9
A 0 226 7782 39.03 890 877 176.9
B 3 112 55106 335.08 869 850 161.9
B 0 190 34405 207.23 869 850 161.9
B 0 219 32534 195.68 869 850 161.9
C 14 238 138578 715.02 839 848 192.6
C 15 208 38119 193.49 839 848 192.6
C 2 16 24396 122.25 839 848 192.6
D 1 52 1746236 7923.23 830 815 220.3
D 7 80 557327 2526.25 830 815 220.3
D 2 250 183025 827.13 830 815 220.3

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