ASTROSAT CZTI

Data Quality Report

Orbit 12062

Creation date: 2024-06-27T16:22:01.765191
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/AS1A04_176T01_9000001786_12062cztM0_level2.evt modeM0/AS1A04_176T01_9000001786_12062cztM0_level2_quad_clean.evt
Size (bytes)417,219,84068,304,960
Size397.9 MB 65.1 MB
Events in quadrant A2,492,567437,503
Events in quadrant B4,038,731422,005
Events in quadrant C2,376,726427,255
Events in quadrant D3,370,353413,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109452
B0157041
C0108221
D0136911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5256851.617199%
B52564408.371385%
C5256500.951294%
D52562504.756469%

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 5457 5257 6 6 0.11% 0.11%
B 5457 5257 207 207 3.79% 3.94%
C 5457 5258 0 0 0.00% 0.00%
D 5457 5258 146 146 2.68% 2.78%

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 13 251 18973 140.87 632 618 130.3
A 1 162 15236 112.19 632 618 130.3
A 1 178 6035 41.57 632 618 130.3
B 4 239 1212359 10059.54 617 600 120.5
B 4 206 286365 2372.31 617 600 120.5
B 15 204 73660 606.51 617 600 120.5
C 13 61 4448 27.01 609 612 142.0
C 3 202 1521 6.4 609 612 142.0
C 14 234 1520 6.39 609 612 142.0
D 1 52 857572 5997.55 592 573 142.9
D 8 195 159420 1111.66 592 573 142.9
D 10 50 32693 224.79 592 573 142.9

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