ASTROSAT CZTI

Data Quality Report

Orbit 07515

Creation date: 2024-06-27T15:20:44.094400
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/AS1A02_134T01_9000001036_07515cztM0_level2.evt modeM0/AS1A02_134T01_9000001036_07515cztM0_level2_quad_clean.evt
Size (bytes)490,631,040106,666,560
Size467.9 MB 101.7 MB
Events in quadrant A3,282,081696,638
Events in quadrant B3,451,919702,354
Events in quadrant C3,751,619677,763
Events in quadrant D3,881,630649,965

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148463
B0151322
C0161962
D0167112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7231400.553174%
B7231650.898907%
C7231370.511686%
D7231921.272300%

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 8766 7233 0 0 0.00% 0.00%
B 8766 7233 0 0 0.00% 0.00%
C 8766 7233 14 14 0.16% 0.19%
D 8766 7233 59 59 0.67% 0.82%

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 14 9589 50.85 846 828 172.3
A 13 251 9008 47.48 846 828 172.3
A 0 226 8095 42.18 846 828 172.3
B 0 214 79340 487.31 853 832 161.1
B 0 219 32371 195.77 853 832 161.1
B 12 111 15827 93.08 853 832 161.1
C 9 68 386100 2046.15 815 817 188.3
C 1 16 151955 802.66 815 817 188.3
C 8 229 28830 148.77 815 817 188.3
D 2 152 468229 2357.84 811 784 198.3
D 12 233 104362 522.46 811 784 198.3
D 2 136 100671 503.84 811 784 198.3

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