ASTROSAT CZTI

Data Quality Report

Orbit 23223

Creation date: 2024-06-27T18:51:31.494192
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/AS1A08_009T01_9000003434_23223cztM0_level2.evt modeM0/AS1A08_009T01_9000003434_23223cztM0_level2_quad_clean.evt
Size (bytes)586,031,040108,420,480
Size558.9 MB 103.4 MB
Events in quadrant A3,247,281712,752
Events in quadrant B3,362,100728,080
Events in quadrant C5,260,708682,774
Events in quadrant D5,385,044653,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147921
B0150021
C0204311
D0211791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7266410.564272%
B7267781.073345%
C72674075.600661%
D72675297.279483%

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 7621 7267 0 0 0.00% 0.00%
B 7622 7268 3 3 0.04% 0.04%
C 7622 7268 232 232 3.04% 3.19%
D 7622 7267 368 368 4.83% 5.06%

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 13 254 10371 55.99 841 823 170.5
A 3 137 7655 40.06 841 823 170.5
A 0 226 7134 37.01 841 823 170.5
B 0 190 29505 177.97 842 819 161.2
B 3 64 28032 168.83 842 819 161.2
B 12 111 20234 120.45 842 819 161.2
C 3 233 1701445 9017.66 801 803 188.6
C 2 16 264057 1395.91 801 803 188.6
C 14 238 125991 663.81 801 803 188.6
D 1 52 1517382 7884.07 791 768 192.4
D 2 152 274545 1423.22 791 768 192.4
D 1 239 272963 1415.0 791 768 192.4

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