ASTROSAT CZTI

Data Quality Report

Orbit 18554

Creation date: 2024-06-27T17:51:30.227914
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/AS1A05_188T01_9000002756_18554cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18554cztM0_level2_quad_clean.evt
Size (bytes)506,856,960101,142,720
Size483.4 MB 96.5 MB
Events in quadrant A2,965,588690,644
Events in quadrant B3,239,203707,037
Events in quadrant C2,896,710650,475
Events in quadrant D5,842,199596,081

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127671
B0135191
C0125561
D0213331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5985631.052632%
B5985891.487051%
C5986741.236218%
D598679513.280989%

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 7220 5985 5 5 0.07% 0.08%
B 7220 5985 25 25 0.35% 0.42%
C 7221 5986 0 0 0.00% 0.00%
D 7221 5986 786 786 10.88% 13.13%

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 0 13 28456 180.97 759 745 153.1
A 13 254 11627 71.06 759 745 153.1
A 14 111 8791 52.54 759 745 153.1
B 3 64 215580 1496.01 759 741 143.6
B 0 190 22772 153.41 759 741 143.6
B 12 111 16270 108.13 759 741 143.6
C 14 238 114377 687.16 710 716 165.4
C 3 233 8736 48.49 710 716 165.4
C 9 54 5834 30.94 710 716 165.4
D 7 238 2265481 13399.51 692 671 169.0
D 10 50 808905 4781.83 692 671 169.0
D 1 52 87239 512.17 692 671 169.0

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