ASTROSAT CZTI

Data Quality Report

Orbit 26205

Creation date: 2024-06-27T19:26:05.279178
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/AS1C05_007T01_9000003786_26205cztM0_level2.evt modeM0/AS1C05_007T01_9000003786_26205cztM0_level2_quad_clean.evt
Size (bytes)93,196,80024,243,840
Size88.9 MB 23.1 MB
Events in quadrant A596,759164,727
Events in quadrant B713,158162,990
Events in quadrant C694,453155,407
Events in quadrant D730,468156,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025120
B028640
C028000
D029500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124910.080064%
B1249393.122498%
C1249120.960769%
D1249141.120897%

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 1249 1249 0 0 0.00% 0.00%
B 1249 1249 41 41 3.28% 3.28%
C 1249 1249 2 2 0.16% 0.16%
D 1249 1249 11 11 0.88% 0.88%

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 2176 62.93 153 150 32.2
A 0 13 1411 39.17 153 150 32.2
A 3 137 1369 37.86 153 150 32.2
B 5 172 109441 3566.25 148 144 30.6
B 15 35 16482 533.09 148 144 30.6
B 0 190 6126 195.19 148 144 30.6
C 3 233 110642 3087.39 143 143 35.8
C 14 238 23668 657.3 143 143 35.8
C 13 61 1051 25.37 143 143 35.8
D 1 52 150328 4045.69 149 145 37.1
D 15 145 7924 209.55 149 145 37.1
D 2 234 5674 148.94 149 145 37.1

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