ASTROSAT CZTI

Data Quality Report

Orbit 18265

Creation date: 2024-06-27T17:47:34.858634
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_019T01_9000002718_18265cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18265cztM0_level2_quad_clean.evt
Size (bytes)495,552,96064,307,520
Size472.6 MB 61.3 MB
Events in quadrant A3,410,521386,668
Events in quadrant B3,374,411391,571
Events in quadrant C3,325,568368,003
Events in quadrant D4,462,818353,829

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140402
B0139272
C0138132
D0175272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406510.796129%
B6406600.936622%
C6406691.077115%
D64061552.419607%

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 7681 6407 4 4 0.05% 0.06%
B 7681 6407 0 0 0.00% 0.00%
C 7681 6407 3 3 0.04% 0.05%
D 7681 6407 78 78 1.02% 1.22%

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 4 2 98853 575.92 856 839 170.2
A 15 174 10301 55.6 856 839 170.2
A 15 192 8089 42.6 856 839 170.2
B 12 111 18441 109.11 858 841 161.3
B 11 111 15942 93.62 858 841 161.3
B 14 111 13521 78.61 858 841 161.3
C 14 238 129464 682.71 812 820 188.4
C 0 207 25706 132.07 812 820 188.4
C 3 233 6954 32.55 812 820 188.4
D 1 52 959837 4879.66 810 787 196.5
D 7 238 277985 1410.39 810 787 196.5
D 13 168 80024 403.16 810 787 196.5

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