ASTROSAT CZTI

Data Quality Report

Orbit 37176

Creation date: 2024-06-27T21:36:32.872944
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/AS1A11_079T01_9000005284_37176cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37176cztM0_level2_quad_clean.evt
Size (bytes)432,097,92080,294,400
Size412.1 MB 76.6 MB
Events in quadrant A2,809,843525,312
Events in quadrant B2,871,631526,309
Events in quadrant C3,232,384517,304
Events in quadrant D3,812,840491,896

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117003
B0120832
C0130962
D0148792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5299480.905831%
B5299150.283072%
C5299741.396490%
D52992885.434988%

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 7152 5300 28 28 0.39% 0.53%
B 7152 5300 6 6 0.08% 0.11%
C 7152 5300 62 62 0.87% 1.17%
D 7152 5300 250 250 3.50% 4.72%

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 257882 2071.29 613 601 124.2
A 9 143 127143 1018.75 613 601 124.2
A 8 144 42836 340.02 613 601 124.2
B 4 251 237797 2018.22 608 592 117.5
B 0 190 89486 756.34 608 592 117.5
B 5 172 50088 421.13 608 592 117.5
C 10 49 370371 2641.07 597 602 140.0
C 0 10 258118 1839.31 597 602 140.0
C 15 214 224787 1601.24 597 602 140.0
D 1 52 749652 5178.08 591 574 144.7
D 2 249 206329 1422.3 591 574 144.7
D 13 249 162366 1118.4 591 574 144.7

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