ASTROSAT CZTI

Data Quality Report

Orbit 43237

Creation date: 2024-06-27T22:49:38.021593
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/AS1A06_006T01_9000005860_43237cztM0_level2.fits modeM0/AS1A06_006T01_9000005860_43237cztM0_level2_quad_clean.evt
Size (bytes)827,052,480207,216,000
Size788.7 MB 197.6 MB
Events in quadrant A7,678,7301,366,570
Events in quadrant B5,548,8451,455,666
Events in quadrant C6,324,4881,378,048
Events in quadrant D10,040,7351,163,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311613
B0264493
C0274773
D0393103

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131782892.193049%
B13179180.136581%
C13179350.265574%
D1317912819.720009%

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 17206 13181 250 250 1.45% 1.90%
B 17207 13182 4 4 0.02% 0.03%
C 17207 13182 24 24 0.14% 0.18%
D 17207 13182 1252 1252 7.28% 9.50%

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 10 83 1206714 4223.73 1384 1356 285.4
A 15 237 554029 1936.64 1384 1356 285.4
A 13 248 433987 1516.0 1384 1356 285.4
B 0 189 38242 134.56 1398 1361 274.1
B 12 111 35133 123.21 1398 1361 274.1
B 11 111 32217 112.57 1398 1361 274.1
C 15 214 582089 1804.31 1376 1384 321.8
C 14 254 144846 445.75 1376 1384 321.8
C 15 111 123547 379.57 1376 1384 321.8
D 1 52 2288737 7198.74 1300 1261 317.8
D 12 16 1747823 5496.47 1300 1261 317.8
D 2 249 368748 1156.49 1300 1261 317.8

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