ASTROSAT CZTI

Data Quality Report

Orbit 39345

Creation date: 2024-06-27T22:03:29.562428
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_018T01_9000005470_39345cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39345cztM0_level2_quad_clean.evt
Size (bytes)385,338,24088,467,840
Size367.5 MB 84.4 MB
Events in quadrant A2,611,349616,417
Events in quadrant B2,310,891643,708
Events in quadrant C2,389,614595,494
Events in quadrant D6,567,918477,153

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107443
B0101062
C0100912
D0229812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937130.263318%
B493760.121531%
C493730.060766%
D493787317.682803%

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 7030 4938 6 6 0.09% 0.12%
B 7030 4938 1 1 0.01% 0.02%
C 7030 4938 0 0 0.00% 0.00%
D 7030 4938 818 818 11.64% 16.57%

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 10 83 400345 3499.29 566 558 114.2
A 13 248 16035 135.47 566 558 114.2
A 2 79 7518 60.92 566 558 114.2
B 0 183 41332 379.33 567 552 107.5
B 5 184 19479 176.05 567 552 107.5
B 12 111 13041 116.17 567 552 107.5
C 15 214 226213 1814.54 544 548 124.4
C 10 20 16663 129.58 544 548 124.4
C 0 10 11589 88.78 544 548 124.4
D 12 235 4104174 33178.72 508 493 123.7
D 2 249 245335 1979.57 508 493 123.7
D 13 249 81717 656.71 508 493 123.7

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