ASTROSAT CZTI

Data Quality Report

Orbit 26338

Creation date: 2024-06-27T19:27:37.194064
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/AS1A09_008T02_9000003796_26338cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26338cztM0_level2_quad_clean.evt
Size (bytes)2,021,417,280346,291,200
Size1.9 GB 330.2 MB
Events in quadrant A11,261,3992,274,397
Events in quadrant B11,424,9712,322,809
Events in quadrant C13,437,1002,235,546
Events in quadrant D23,449,2091,976,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496510
B0498140
C0553030
D0861340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243943551.455276%
B243954191.717565%
C243956802.787456%
D24394472219.357219%

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 26609 24397 0 0 0.00% 0.00%
B 26610 24399 8 8 0.03% 0.03%
C 26610 24399 104 104 0.39% 0.43%
D 26608 24395 3685 3685 13.85% 15.11%

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 6 16 47469 77.3 2905 2837 577.4
A 13 254 37841 60.62 2905 2837 577.4
A 3 137 27755 43.15 2905 2837 577.4
B 12 111 68025 117.42 2894 2810 555.4
B 0 230 63164 108.67 2894 2810 555.4
B 11 111 62081 106.72 2894 2810 555.4
C 3 233 1574992 2410.28 2804 2814 652.3
C 14 238 447565 681.84 2804 2814 652.3
C 2 16 263958 400.36 2804 2814 652.3
D 1 52 13436362 22190.58 2559 2496 605.4
D 11 176 166608 271.09 2559 2496 605.4
D 2 234 103142 166.25 2559 2496 605.4

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