ASTROSAT CZTI

Data Quality Report

Orbit 28017

Creation date: 2024-06-27T19:47:06.197235
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/AS1A10_021T01_9000004044_28017cztM0_level2.evt modeM0/AS1A10_021T01_9000004044_28017cztM0_level2_quad_clean.evt
Size (bytes)1,270,526,400222,128,640
Size1.2 GB 211.8 MB
Events in quadrant A8,237,2021,428,417
Events in quadrant B8,339,4821,428,271
Events in quadrant C8,591,8011,351,250
Events in quadrant D12,133,1281,319,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357520
B0359370
C0365960
D0475580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174071530.878957%
B174072551.464928%
C174073041.746424%
D174077904.538404%

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 18452 17410 0 0 0.00% 0.00%
B 18451 17407 5 5 0.03% 0.03%
C 18451 17408 12 12 0.07% 0.07%
D 18452 17409 703 703 3.81% 4.04%

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 13 254 26711 57.39 2125 2075 429.3
A 0 13 25948 55.61 2125 2075 429.3
A 3 137 21333 44.86 2125 2075 429.3
B 12 111 52231 124.54 2109 2060 402.9
B 11 111 47429 112.62 2109 2060 402.9
B 14 111 44361 105.0 2109 2060 402.9
C 14 238 325693 679.58 2034 2050 476.2
C 3 233 209395 435.38 2034 2050 476.2
C 2 16 128344 265.19 2034 2050 476.2
D 8 195 1969865 4077.68 2027 1970 482.6
D 1 52 1867625 3865.82 2027 1970 482.6
D 7 80 447414 923.0 2027 1970 482.6

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