ASTROSAT CZTI

Data Quality Report

Orbit 06734

Creation date: 2024-06-27T15:10:56.447396
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/AS1C02_003T01_9000000924_06734cztM0_level2.evt modeM0/AS1C02_003T01_9000000924_06734cztM0_level2_quad_clean.evt
Size (bytes)485,743,68098,346,240
Size463.2 MB 93.8 MB
Events in quadrant A3,380,207622,583
Events in quadrant B3,373,209632,390
Events in quadrant C3,519,651615,047
Events in quadrant D3,931,413589,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153184
B0152783
C0156963
D0167993

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7447430.577414%
B7447610.819122%
C7447550.738552%
D7447680.913119%

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 7757 7449 3 3 0.04% 0.04%
B 7757 7449 0 0 0.00% 0.00%
C 7757 7449 4 4 0.05% 0.05%
D 7757 7449 23 23 0.30% 0.31%

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 8 15 57073 324.13 845 825 173.5
A 14 111 45338 256.51 845 825 173.5
A 3 1 26273 146.64 845 825 173.5
B 4 81 40519 241.96 858 836 164.0
B 12 111 17571 102.04 858 836 164.0
B 11 111 14051 80.58 858 836 164.0
C 12 16 194878 999.73 830 831 194.1
C 9 16 83484 425.83 830 831 194.1
C 13 61 6396 28.67 830 831 194.1
D 8 195 411413 2067.65 821 792 198.6
D 7 203 139706 699.49 821 792 198.6
D 2 136 82662 412.25 821 792 198.6

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