ASTROSAT CZTI

Data Quality Report

Orbit 17580

Creation date: 2024-06-27T17:38:13.684602
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_056T01_9000002604_17580cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17580cztM0_level2_quad_clean.evt
Size (bytes)1,240,038,720230,063,040
Size1.2 GB 219.4 MB
Events in quadrant A10,094,5271,451,965
Events in quadrant B8,597,7401,461,220
Events in quadrant C9,065,0561,388,246
Events in quadrant D8,550,4161,396,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422234
B0377814
C0385734
D0387324

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184384282.321293%
B184391000.542329%
C184391650.894842%
D18439780.423016%

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 20328 18441 267 267 1.31% 1.45%
B 20329 18442 0 0 0.00% 0.00%
C 20329 18442 0 0 0.00% 0.00%
D 20329 18442 38 38 0.19% 0.21%

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 1709896 3887.69 2176 2128 439.3
A 6 16 23381 48.38 2176 2128 439.3
A 0 226 18902 38.19 2176 2128 439.3
B 12 111 52307 120.56 2182 2123 416.3
B 11 111 45493 104.19 2182 2123 416.3
B 14 111 38655 87.76 2182 2123 416.3
C 3 233 587513 1198.06 2086 2097 488.6
C 14 238 320039 650.67 2086 2097 488.6
C 0 207 23790 44.39 2086 2097 488.6
D 5 222 361078 694.93 2120 2061 516.6
D 4 239 93807 177.59 2120 2061 516.6
D 2 234 69569 130.67 2120 2061 516.6

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