ASTROSAT CZTI

Data Quality Report

Orbit 01395

Creation date: 2024-06-27T14:12:03.194152
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_014T02_9000000232_01395cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01395cztM0_level2_quad_clean.evt
Size (bytes)1,335,358,080104,713,920
Size1.2 GB 99.9 MB
Events in quadrant A13,377,428645,228
Events in quadrant B10,410,266684,236
Events in quadrant C8,382,715674,143
Events in quadrant D7,794,806664,404

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448952
B0360591
C0300601
D0283051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A722481311.254153%
B72241812.505537%
C7224310.429125%
D7224720.996678%

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 7434 7224 2527 2527 33.99% 34.98%
B 7434 7225 815 815 10.96% 11.28%
C 7434 7226 237 237 3.19% 3.28%
D 7434 7226 244 244 3.28% 3.38%

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 3004079 5667.01 2178 2189 529.7
A 4 32 1777358 3351.19 2178 2189 529.7
A 3 80 229473 429.07 2178 2189 529.7
B 8 4 1101650 2020.83 2283 2296 544.0
B 5 249 277199 505.33 2283 2296 544.0
B 12 52 183489 333.07 2283 2296 544.0
C 15 241 254699 438.89 2058 2128 575.5
C 3 79 30481 49.27 2058 2128 575.5
C 3 111 29951 48.35 2058 2128 575.5
D 13 205 55918 89.61 2054 2102 600.6
D 13 73 32111 49.97 2054 2102 600.6
D 5 82 10342 13.72 2054 2102 600.6

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