ASTROSAT CZTI

Data Quality Report

Orbit 13901

Creation date: 2024-06-27T16:47:39.323864
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_010T02_9000002048_13901cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13901cztM0_level2_quad_clean.evt
Size (bytes)544,947,84074,520,000
Size519.7 MB 71.1 MB
Events in quadrant A4,119,758438,231
Events in quadrant B3,658,679442,634
Events in quadrant C3,546,480436,794
Events in quadrant D4,666,684413,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172702
B0158091
C0154941
D0189101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75383604.775803%
B75381762.334837%
C75381131.499071%
D75383084.085964%

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 7889 7539 198 198 2.51% 2.63%
B 7889 7539 15 15 0.19% 0.20%
C 7889 7540 0 0 0.00% 0.00%
D 7889 7539 195 195 2.47% 2.59%

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 9 143 626529 3441.09 888 868 181.8
A 8 15 42124 226.9 888 868 181.8
A 1 162 20480 107.86 888 868 181.8
B 4 80 78215 445.64 898 875 173.5
B 4 173 53521 303.35 898 875 173.5
B 12 111 21748 120.27 898 875 173.5
C 3 233 107230 518.43 875 879 205.1
C 8 128 12987 59.02 875 879 205.1
C 8 112 8453 36.92 875 879 205.1
D 1 52 742317 3594.6 860 840 206.3
D 5 222 327656 1584.37 860 840 206.3
D 12 110 86166 413.65 860 840 206.3

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