ASTROSAT CZTI

Data Quality Report

Orbit 20210

Creation date: 2024-06-27T18:12:27.854153
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/AS1A06_005T02_9000002996_20210cztM0_level2.evt modeM0/AS1A06_005T02_9000002996_20210cztM0_level2_quad_clean.evt
Size (bytes)557,720,64096,759,360
Size531.9 MB 92.3 MB
Events in quadrant A3,699,746624,710
Events in quadrant B4,429,131619,123
Events in quadrant C3,737,011594,510
Events in quadrant D4,519,950574,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156392
B0176802
C0158012
D0182332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74372703.630496%
B74384065.458457%
C74383294.423232%
D74373825.136480%

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 8682 7439 1 1 0.01% 0.01%
B 8683 7440 92 92 1.06% 1.24%
C 8683 7440 3 3 0.03% 0.04%
D 8682 7439 122 122 1.41% 1.64%

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 14 238 29395 147.64 948 928 192.8
A 4 2 23937 119.33 948 928 192.8
A 0 226 8121 37.3 948 928 192.8
B 7 220 486426 2704.99 934 910 179.5
B 6 36 126454 699.45 934 910 179.5
B 0 197 57328 314.33 934 910 179.5
C 14 238 141120 663.38 900 907 211.4
C 9 54 51805 240.81 900 907 211.4
C 3 233 20473 92.57 900 907 211.4
D 1 52 677927 3058.56 914 885 221.4
D 12 17 146039 655.74 914 885 221.4
D 7 38 66804 297.79 914 885 221.4

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