ASTROSAT CZTI

Data Quality Report

Orbit 40867

Creation date: 2024-06-27T22:21:32.195993
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_097T01_9000005574_40867cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40867cztM0_level2_quad_clean.evt
Size (bytes)369,933,12080,118,720
Size352.8 MB 76.4 MB
Events in quadrant A2,913,870561,816
Events in quadrant B4,925,116473,484
Events in quadrant C2,480,845552,829
Events in quadrant D3,000,176501,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117953
B0177982
C0102302
D0121452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4798220.458524%
B4798109622.842851%
C4798290.604419%
D4798611.271363%

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 6920 4799 16 16 0.23% 0.33%
B 6920 4799 812 812 11.73% 16.92%
C 6920 4799 28 28 0.40% 0.58%
D 6920 4799 48 48 0.69% 1.00%

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 456643 4045.46 547 537 112.7
A 6 10 165499 1463.14 547 537 112.7
A 13 248 152818 1350.67 547 537 112.7
B 4 171 2874486 30004.84 498 485 95.8
B 5 255 75704 785.29 498 485 95.8
B 12 111 11861 118.77 498 485 95.8
C 15 214 203908 1615.46 535 539 125.9
C 0 10 119234 942.85 535 539 125.9
C 9 54 44263 347.32 535 539 125.9
D 12 79 431575 3308.66 526 511 130.3
D 2 249 265418 2033.31 526 511 130.3
D 13 249 201328 1541.39 526 511 130.3

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