ASTROSAT CZTI

Data Quality Report

Orbit 00202

Creation date: 2024-06-27T13:57:48.965195
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/AS1P01_140T01_9000000018_00202cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00202cztM0_level2_quad_clean.evt
Size (bytes)864,331,20071,354,880
Size824.3 MB 68.0 MB
Events in quadrant A6,523,113444,373
Events in quadrant B6,522,104454,967
Events in quadrant C6,178,791444,273
Events in quadrant D6,578,496423,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233832
B0233691
C0223441
D0235651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562040.071174%
B562030.053381%
C562040.071174%
D5620480.854093%

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 7242 5622 139 139 1.92% 2.47%
B 7242 5622 60 60 0.83% 1.07%
C 7242 5622 40 40 0.55% 0.71%
D 7242 5622 198 198 2.73% 3.52%

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 0 6 40429 106.67 1665 1649 363.6
A 13 17 12934 31.04 1665 1649 363.6
A 12 189 11731 27.73 1665 1649 363.6
B 0 120 15646 35.93 1685 1698 388.2
B 5 85 14116 31.99 1685 1698 388.2
B 5 47 12214 27.09 1685 1698 388.2
C 0 186 26955 58.74 1556 1611 431.5
C 9 188 15036 31.11 1556 1611 431.5
C 14 236 9466 18.2 1556 1611 431.5
D 14 23 146114 313.05 1525 1572 461.7
D 1 4 85854 182.54 1525 1572 461.7
D 13 117 82750 175.82 1525 1572 461.7

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