ASTROSAT CZTI

Data Quality Report

Orbit 39992

Creation date: 2024-06-27T22:11:00.548148
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_054T03_9000005516_39992cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39992cztM0_level2_quad_clean.evt
Size (bytes)338,397,12091,808,640
Size322.7 MB 87.6 MB
Events in quadrant A3,005,642605,616
Events in quadrant B2,786,108628,301
Events in quadrant C2,766,813608,009
Events in quadrant D3,535,050548,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125123
B0120512
C0117852
D0145072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5556811.457883%
B5556380.683945%
C5556100.179986%
D55561843.311735%

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 7199 5557 51 51 0.71% 0.92%
B 7199 5557 20 20 0.28% 0.36%
C 7199 5557 5 5 0.07% 0.09%
D 7199 5557 151 151 2.10% 2.72%

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 465945 3708.89 608 595 125.5
A 13 248 154959 1230.3 608 595 125.5
A 2 79 11973 90.68 608 595 125.5
B 4 171 192849 1616.41 610 593 118.9
B 5 255 81800 682.76 610 593 118.9
B 0 230 69187 576.71 610 593 118.9
C 15 214 231081 1625.87 602 604 141.8
C 14 254 109581 768.76 602 604 141.8
C 7 220 34739 240.8 602 604 141.8
D 2 250 431144 2942.02 591 575 146.4
D 2 249 279267 1904.26 591 575 146.4
D 12 227 262345 1788.64 591 575 146.4

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