ASTROSAT CZTI

Data Quality Report

Orbit 18558

Creation date: 2024-06-27T17:51:33.756607
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_18558cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18558cztM0_level2_quad_clean.evt
Size (bytes)497,836,80098,282,880
Size474.8 MB 93.7 MB
Events in quadrant A3,750,821636,762
Events in quadrant B3,291,553676,083
Events in quadrant C3,261,732630,101
Events in quadrant D4,319,140567,632

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156462
B0140272
C0139892
D0175732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66792002.994460%
B6678350.524109%
C6678540.808625%
D66784626.918239%

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 7819 6680 155 155 1.98% 2.32%
B 7818 6679 1 1 0.01% 0.01%
C 7818 6679 1 1 0.01% 0.01%
D 7818 6679 415 415 5.31% 6.21%

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 657938 4065.37 802 787 161.6
A 13 254 11575 66.74 802 787 161.6
A 0 226 6973 38.27 802 787 161.6
B 3 64 38199 242.86 821 801 154.0
B 12 111 18223 113.14 821 801 154.0
B 11 111 15443 95.08 821 801 154.0
C 14 238 123342 675.72 778 785 181.4
C 9 54 98791 540.35 778 785 181.4
C 13 61 5605 26.57 778 785 181.4
D 1 52 1289607 7268.0 740 719 177.3
D 7 238 134850 756.36 740 719 177.3
D 7 38 46155 256.21 740 719 177.3

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