ASTROSAT CZTI

Data Quality Report

Orbit 17645

Creation date: 2024-06-27T17:39:02.952626
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/AS1A05_118T02_9000002612_17645cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17645cztM0_level2_quad_clean.evt
Size (bytes)660,660,48076,245,120
Size630.1 MB 72.7 MB
Events in quadrant A2,881,570518,226
Events in quadrant B2,969,171526,942
Events in quadrant C3,018,163501,427
Events in quadrant D10,745,470355,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119521
B0122591
C0121761
D0358787

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5815390.670679%
B5815550.945830%
C5815641.100602%
D5814305452.528380%

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 7080 5816 0 0 0.00% 0.00%
B 7080 5816 3 3 0.04% 0.05%
C 7080 5816 0 0 0.00% 0.00%
D 7078 5813 2880 2880 40.69% 49.54%

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 14 237 17246 109.51 745 732 150.8
A 0 226 6431 37.79 745 732 150.8
A 12 194 5474 31.45 745 732 150.8
B 0 230 45730 322.53 735 719 139.6
B 3 64 19923 137.61 735 719 139.6
B 12 111 16237 111.19 735 719 139.6
C 3 233 133277 811.75 705 710 163.3
C 14 238 111997 681.45 705 710 163.3
C 5 218 15559 90.93 705 710 163.3
D 1 52 8589137 67585.75 520 504 127.1
D 13 189 122642 961.13 520 504 127.1
D 12 233 19171 146.89 520 504 127.1

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