ASTROSAT CZTI

Data Quality Report

Orbit 28865

Creation date: 2024-06-27T19:57:21.167907
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_123T06_9000004138_28865cztM0_level2.evt modeM0/AS1A10_123T06_9000004138_28865cztM0_level2_quad_clean.evt
Size (bytes)492,209,28080,020,800
Size469.4 MB 76.3 MB
Events in quadrant A3,331,759512,149
Events in quadrant B2,957,392525,485
Events in quadrant C3,215,571501,722
Events in quadrant D5,003,225473,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136151
B0123641
C0131281
D0188181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58711562.657128%
B58721332.264986%
C58721332.264986%
D58724667.935967%

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 6896 5871 36 36 0.52% 0.61%
B 6897 5872 7 7 0.10% 0.12%
C 6897 5872 13 13 0.19% 0.22%
D 6897 5872 440 440 6.38% 7.49%

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 14 235 452349 3061.49 738 724 147.5
A 1 113 28660 189.37 738 724 147.5
A 13 254 9316 58.24 738 724 147.5
B 10 246 48533 342.46 730 712 139.6
B 5 255 24196 168.17 730 712 139.6
B 12 111 16573 113.58 730 712 139.6
C 3 233 352918 2178.84 698 703 161.7
C 14 238 115379 709.4 698 703 161.7
C 4 254 11203 64.95 698 703 161.7
D 8 195 1854444 11216.82 702 683 165.3
D 1 52 371519 2243.87 702 683 165.3
D 7 80 59757 357.45 702 683 165.3

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