ASTROSAT CZTI

Data Quality Report

Orbit 41139

Creation date: 2024-06-27T22:24:54.840324
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/AS1A12_052T04_9000005602_41139cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41139cztM0_level2_quad_clean.evt
Size (bytes)678,067,200156,084,480
Size646.7 MB 148.9 MB
Events in quadrant A5,149,6081,083,439
Events in quadrant B6,705,3031,019,073
Events in quadrant C4,885,9711,056,257
Events in quadrant D7,609,248897,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209883
B0267412
C0204832
D0293462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9663150.155231%
B96638929.231088%
C9663560.579530%
D9663103610.721308%

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 14834 9666 2 2 0.01% 0.02%
B 14834 9666 688 688 4.64% 7.12%
C 14833 9665 44 44 0.30% 0.46%
D 14834 9666 958 958 6.46% 9.91%

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 786750 3593.09 1075 1052 218.7
A 12 189 117203 531.17 1075 1052 218.7
A 2 79 64088 288.27 1075 1052 218.7
B 0 245 2657478 13543.79 1018 992 196.1
B 12 111 24862 121.7 1018 992 196.1
B 0 190 24752 121.14 1018 992 196.1
C 15 214 407358 1683.83 1045 1051 241.3
C 14 254 264253 1090.77 1045 1051 241.3
C 0 10 123867 508.98 1045 1051 241.3
D 2 249 1925399 7950.21 996 969 242.1
D 13 249 836546 3451.94 996 969 242.1
D 2 16 675435 2786.35 996 969 242.1

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