ASTROSAT CZTI

Data Quality Report

Orbit 52140

Creation date: 2025-05-19T10:52:41.127887
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/AS1C09_011T07_9000006470_52140cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52140cztM0_level2_quad_clean.evt
Size (bytes)885,600,00086,472,000
Size844.6 MB 82.5 MB
Events in quadrant A4,603,944647,325
Events in quadrant B5,461,545694,297
Events in quadrant C7,961,785537,723
Events in quadrant D14,210,760247,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01882025
B02119712
C02861535
D04713074

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70392583.665293%
B70423324.714570%
C7040140419.943182%
D7036433361.583286%

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 7039 7039 166 166 2.36% 2.36%
B 7042 7042 199 199 2.83% 2.83%
C 7040 7040 994 994 14.12% 14.12%
D 7038 7038 4215 4215 59.89% 59.89%

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 3 114 815858 4381.93 749 729 186.0
A 7 206 176852 946.79 749 729 186.0
A 14 254 139644 746.77 749 729 186.0
B 5 172 1119467 6927.91 749 721 161.5
B 5 185 444246 2746.56 749 721 161.5
B 4 81 209670 1293.93 749 721 161.5
C 15 224 3077029 16217.34 686 679 189.7
C 15 158 384660 2024.2 686 679 189.7
C 15 209 315029 1657.13 686 679 189.7
D 6 42 7757037 54131.35 500 479 143.3
D 15 94 1096173 7646.61 500 479 143.3
D 12 3 723626 5046.69 500 479 143.3

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