ASTROSAT CZTI

Data Quality Report

Orbit 26081

Creation date: 2024-06-27T19:24:56.179911
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_218T01_9000003770_26081cztM0_level2.evt modeM0/AS1T03_218T01_9000003770_26081cztM0_level2_quad_clean.evt
Size (bytes)368,763,84064,581,120
Size351.7 MB 61.6 MB
Events in quadrant A2,824,037406,478
Events in quadrant B2,600,644412,953
Events in quadrant C2,619,690391,860
Events in quadrant D2,783,347393,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114530
B0107860
C0108130
D0112260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5000981.960000%
B4999711.420284%
C4999921.840368%
D4999320.640128%

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 6175 5000 40 40 0.65% 0.80%
B 6174 4999 7 7 0.11% 0.14%
C 6174 4999 0 0 0.00% 0.00%
D 6174 4999 3 3 0.05% 0.06%

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 300919 2311.33 653 642 129.9
A 13 254 8073 57.2 653 642 129.9
A 11 29 6962 48.65 653 642 129.9
B 0 190 30093 243.68 648 633 120.9
B 0 245 23351 187.91 648 633 120.9
B 12 111 14523 114.89 648 633 120.9
C 14 238 102926 704.12 625 629 145.3
C 5 4 57608 392.19 625 629 145.3
C 2 16 15160 100.02 625 629 145.3
D 7 80 179879 1187.37 634 620 151.0
D 1 52 176671 1166.12 634 620 151.0
D 2 234 19468 124.84 634 620 151.0

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