ASTROSAT CZTI

Data Quality Report

Orbit 11252

Creation date: 2024-06-27T16:10:21.531359
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/AS1T01_202T01_9000001640_11252cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11252cztM0_level2_quad_clean.evt
Size (bytes)564,255,360101,917,440
Size538.1 MB 97.2 MB
Events in quadrant A3,880,837669,202
Events in quadrant B4,049,040661,936
Events in quadrant C3,750,305666,974
Events in quadrant D4,950,880617,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015896158
B016374134
C015716120
D019283189

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01382
B01382
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67491902.815232%
B67472714.016600%
C67492283.378278%
D67465458.078862%

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 7185 6755 54 54 0.75% 0.80%
B 7185 6754 110 110 1.53% 1.63%
C 7185 6758 114 114 1.59% 1.69%
D 7185 6754 391 391 5.44% 5.79%

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 14 238 267457 1456.02 826 809 183.1
A 8 5 174088 946.18 826 809 183.1
A 1 162 76896 415.47 826 809 183.1
B 4 239 619171 3752.58 823 807 164.8
B 11 51 100435 604.6 823 807 164.8
B 15 204 66294 397.41 823 807 164.8
C 4 254 566454 2977.04 799 809 190.0
C 9 204 68388 355.67 799 809 190.0
C 13 61 5876 26.67 799 809 190.0
D 13 152 529099 2684.81 770 749 196.8
D 10 253 525536 2666.7 770 749 196.8
D 13 104 449294 2279.28 770 749 196.8

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