ASTROSAT CZTI

Data Quality Report

Orbit 06492

Creation date: 2024-06-27T15:08:06.263141
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/AS1G06_164T01_9000000866_06492cztM0_level2.evt modeM0/AS1G06_164T01_9000000866_06492cztM0_level2_quad_clean.evt
Size (bytes)393,073,92083,580,480
Size374.9 MB 79.7 MB
Events in quadrant A2,810,750536,070
Events in quadrant B2,937,334532,115
Events in quadrant C2,594,384527,174
Events in quadrant D3,152,245515,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125892
B0128731
C0122491
D0134201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60171001.661958%
B60171171.944491%
C6017761.263088%
D60171402.326741%

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 6877 6020 3 3 0.04% 0.05%
B 6877 6020 22 22 0.32% 0.37%
C 6877 6020 0 0 0.00% 0.00%
D 6877 6020 45 45 0.65% 0.75%

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 8 15 93898 660.83 684 668 141.1
A 15 236 52532 367.62 684 668 141.1
A 15 234 18914 129.33 684 668 141.1
B 0 219 101567 762.02 685 670 132.4
B 0 214 52256 389.6 685 670 132.4
B 4 81 45084 335.44 685 670 132.4
C 12 4 12090 74.61 660 659 153.2
C 13 61 5192 29.59 660 659 153.2
C 1 16 2858 14.35 660 659 153.2
D 8 195 228416 1414.07 660 639 161.1
D 2 152 195834 1211.79 660 639 161.1
D 2 14 52699 323.19 660 639 161.1

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