ASTROSAT CZTI

Data Quality Report

Orbit 22896

Creation date: 2024-06-27T18:47:12.159614
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_9000003382_22896cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22896cztM0_level2_quad_clean.evt
Size (bytes)472,438,080115,557,120
Size450.6 MB 110.2 MB
Events in quadrant A3,102,033771,948
Events in quadrant B3,239,456791,637
Events in quadrant C3,239,911756,450
Events in quadrant D4,274,573716,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137002
B0140572
C0141302
D0172602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6648210.315884%
B6648290.436221%
C6648871.308664%
D66482463.700361%

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 7788 6649 0 0 0.00% 0.00%
B 7788 6649 1 1 0.01% 0.02%
C 7788 6649 4 4 0.05% 0.06%
D 7788 6649 212 212 2.72% 3.19%

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 10596 60.57 804 789 161.9
A 3 137 6894 37.7 804 789 161.9
A 0 226 6860 37.49 804 789 161.9
B 0 230 39771 255.33 806 784 152.7
B 12 111 18029 112.94 806 784 152.7
B 11 111 16072 100.12 806 784 152.7
C 14 238 125190 687.44 778 784 181.0
C 0 239 56050 305.39 778 784 181.0
C 0 10 14474 75.65 778 784 181.0
D 1 52 638268 3422.76 768 745 186.3
D 2 152 221341 1184.35 768 745 186.3
D 9 1 149384 798.02 768 745 186.3

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