ASTROSAT CZTI

Data Quality Report

Orbit 15068

Creation date: 2024-06-27T17:03:18.091409
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/AS1T02_060T01_9000002216_15068cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15068cztM0_level2_quad_clean.evt
Size (bytes)435,280,32076,325,760
Size415.1 MB 72.8 MB
Events in quadrant A3,046,768482,931
Events in quadrant B3,238,772501,293
Events in quadrant C3,635,890472,514
Events in quadrant D2,869,557451,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124352
B0131141
C0148361
D0123771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5762380.659493%
B5762490.850399%
C5762100.173551%
D5762490.850399%

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 7148 5764 3 3 0.04% 0.05%
B 7148 5764 21 21 0.29% 0.36%
C 7148 5764 0 0 0.00% 0.00%
D 7148 5764 34 34 0.48% 0.59%

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 1 162 68673 456.44 741 729 148.9
A 4 2 44740 295.66 741 729 148.9
A 1 178 32259 211.82 741 729 148.9
B 3 64 319425 2295.19 742 726 138.9
B 4 173 17762 122.69 742 726 138.9
B 12 111 16875 116.3 742 726 138.9
C 3 233 854461 5239.29 711 717 163.0
C 13 61 5018 26.39 711 717 163.0
C 3 232 4672 24.27 711 717 163.0
D 10 70 140280 811.35 703 684 172.1
D 13 249 63099 362.76 703 684 172.1
D 2 234 16807 93.71 703 684 172.1

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