ASTROSAT CZTI

Data Quality Report

Orbit 28896

Creation date: 2024-06-27T19:57:43.876194
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/AS1A10_064T01_9000004144_28896cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28896cztM0_level2_quad_clean.evt
Size (bytes)580,132,80093,836,160
Size553.3 MB 89.5 MB
Events in quadrant A3,152,008614,659
Events in quadrant B3,208,817624,884
Events in quadrant C5,707,716574,737
Events in quadrant D5,047,553560,888

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137481
B0138431
C0217031
D0192681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66881702.541866%
B66881862.781100%
C66894266.368665%
D66895307.923456%

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 6938 6688 0 0 0.00% 0.00%
B 6938 6688 0 0 0.00% 0.00%
C 6939 6689 36 36 0.52% 0.54%
D 6939 6689 411 411 5.92% 6.14%

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 13 254 10365 57.69 817 798 165.8
A 3 137 8251 44.94 817 798 165.8
A 0 226 6862 36.57 817 798 165.8
B 0 190 24050 148.69 807 783 156.5
B 12 111 19284 118.23 807 783 156.5
B 11 111 17786 108.66 807 783 156.5
C 3 233 2539975 14147.44 767 771 179.5
C 14 238 126852 702.47 767 771 179.5
C 2 114 15694 83.15 767 771 179.5
D 1 52 1380608 7419.9 777 756 186.0
D 8 195 700416 3762.29 777 756 186.0
D 2 234 26445 138.14 777 756 186.0

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