ASTROSAT CZTI

Data Quality Report

Orbit 01352

Creation date: 2024-06-27T14:11:23.954459
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/AS1G04_002T02_9000000230_01352cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01352cztM0_level2_quad_clean.evt
Size (bytes)1,270,820,16097,536,960
Size1.2 GB 93.0 MB
Events in quadrant A11,942,545607,554
Events in quadrant B10,018,977637,369
Events in quadrant C8,118,772625,462
Events in quadrant D7,964,509615,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403192
B0345001
C0288771
D0284671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A670785512.747875%
B67071412.102281%
C6707711.058595%
D67071271.893544%

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 6977 6707 2179 2179 31.23% 32.49%
B 6977 6708 979 979 14.03% 14.59%
C 6977 6709 276 276 3.96% 4.11%
D 6977 6708 305 305 4.37% 4.55%

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 15 127 3936469 7849.33 2052 2067 501.2
A 4 32 113288 221.89 2052 2067 501.2
A 0 51 12101 20.02 2052 2067 501.2
B 8 4 1071688 2092.79 2154 2164 511.1
B 12 52 312681 607.6 2154 2164 511.1
B 10 224 196130 379.54 2154 2164 511.1
C 8 208 226055 406.87 1959 2026 550.6
C 15 241 152628 273.51 1959 2026 550.6
C 3 79 36937 63.4 1959 2026 550.6
D 13 205 280974 482.26 1950 1999 578.5
D 1 83 161672 276.03 1950 1999 578.5
D 10 84 81987 138.27 1950 1999 578.5

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