ASTROSAT CZTI

Data Quality Report

Orbit 20181001_A05_072T05_9000002394_level2

Creation date: 2025-11-24T22:20:24.921486
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_072T05_9000002394cztM0_level2.fits modeM0/AS1A05_072T05_9000002394cztM0_level2_quad_clean.evt
Size (bytes)751,328,640688,717,440
Size716.5 MB 656.8 MB
Events in quadrant A4,621,8144,000,128
Events in quadrant B4,406,9104,021,304
Events in quadrant C4,547,5543,999,196
Events in quadrant D3,994,0023,653,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015400
C015400
D015400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01671580
B01761970
C01607830
D01750020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7558415432.041437%
B7558422562.984759%
C7558414051.858859%
D7558415762.085097%

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 87554 75582 0 0 0.00% 0.00%
B 87554 75569 0 0 0.00% 0.00%
C 87554 75578 0 0 0.00% 0.00%
D 87554 75565 0 0 0.00% 0.00%

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 0 29 4429 11.23 1200 1125 294.2
A 7 110 3694 8.73 1200 1125 294.2
A 0 30 3497 8.06 1200 1125 294.2
B 2 9 3583 10.8 1166 1113 228.7
B 2 8 2999 8.25 1166 1113 228.7
B 3 17 2878 7.72 1166 1113 228.7
C 1 80 3357 7.26 1200 1122 308.1
C 1 81 3347 7.22 1200 1122 308.1
C 12 241 3100 6.42 1200 1122 308.1
D 6 231 2915 6.18 1138 1038 303.8
D 3 14 2856 5.98 1138 1038 303.8
D 7 3 2799 5.8 1138 1038 303.8

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