ASTROSAT CZTI

Data Quality Report

Orbit 41407

Creation date: 2024-06-27T22:28:39.040528
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/AS1A12_035T01_9000005666_41407cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41407cztM0_level2_quad_clean.evt
Size (bytes)368,913,60095,814,720
Size351.8 MB 91.4 MB
Events in quadrant A3,721,474634,823
Events in quadrant B3,117,519653,394
Events in quadrant C3,267,096612,867
Events in quadrant D3,085,470583,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146053
B0132032
C0134122
D0133762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968801.340483%
B5968270.452413%
C59681853.099866%
D5968360.603217%

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 7281 5969 66 66 0.91% 1.11%
B 7281 5969 21 21 0.29% 0.35%
C 7281 5969 189 189 2.60% 3.17%
D 7281 5969 30 30 0.41% 0.50%

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 13 248 566160 4168.84 653 637 135.7
A 10 83 544604 4009.94 653 637 135.7
A 12 189 47478 345.3 653 637 135.7
B 5 255 436981 3458.54 648 629 126.2
B 0 190 114219 900.32 648 629 126.2
B 12 111 16576 126.4 648 629 126.2
C 0 10 529853 3545.53 631 632 149.3
C 15 214 261345 1746.65 631 632 149.3
C 0 15 14707 94.3 631 632 149.3
D 2 120 192506 1221.53 644 625 157.1
D 13 249 165645 1050.53 644 625 157.1
D 1 52 90661 573.18 644 625 157.1

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