ASTROSAT CZTI

Data Quality Report

Orbit 26774

Creation date: 2024-06-27T19:32:46.469887
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/AS1A07_027T01_9000003862_26774cztM0_level2.evt modeM0/AS1A07_027T01_9000003862_26774cztM0_level2_quad_clean.evt
Size (bytes)569,165,76041,806,080
Size542.8 MB 39.9 MB
Events in quadrant A2,108,112276,487
Events in quadrant B7,845,238195,383
Events in quadrant C2,104,149279,839
Events in quadrant D4,920,793243,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085690
B0258630
C084880
D0172650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3813250.655652%
B3813284574.613165%
C3813802.098085%
D381399926.199843%

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 4913 3814 0 0 0.00% 0.00%
B 4913 3813 2500 2500 50.89% 65.57%
C 4913 3814 18 18 0.37% 0.47%
D 4913 3814 657 657 13.37% 17.23%

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 189567 1872.72 496 486 101.0
A 13 254 6411 58.68 496 486 101.0
A 3 137 4687 41.61 496 486 101.0
B 0 189 6562465 105285.73 326 319 62.3
B 0 190 9010 139.44 326 319 62.3
B 12 111 7368 113.1 326 319 62.3
C 2 16 139893 1232.97 484 487 113.1
C 14 238 76411 671.51 484 487 113.1
C 13 61 3235 24.3 484 487 113.1
D 7 80 2341806 21785.01 444 433 107.5
D 1 52 602572 5602.53 444 433 107.5
D 15 21 247430 2298.15 444 433 107.5

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