ASTROSAT CZTI

Data Quality Report

Orbit 24112

Creation date: 2024-06-27T19:02:17.770776
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/AS1C05_012T04_9000003564_24112cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24112cztM0_level2_quad_clean.evt
Size (bytes)614,986,560128,946,240
Size586.5 MB 123.0 MB
Events in quadrant A3,217,905904,204
Events in quadrant B3,205,059922,323
Events in quadrant C3,123,052878,142
Events in quadrant D8,635,452743,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139092
B0137532
C0135282
D0301632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6547110.168016%
B6547300.458225%
C6547480.733160%
D6546191529.254507%

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 7727 6548 0 0 0.00% 0.00%
B 7727 6548 3 3 0.04% 0.05%
C 7727 6547 0 0 0.00% 0.00%
D 7726 6546 1768 1768 22.88% 27.01%

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 23 115876 720.06 802 788 159.8
A 0 226 13310 78.35 802 788 159.8
A 13 254 10525 60.92 802 788 159.8
B 0 228 32898 216.31 800 782 148.5
B 15 32 26717 174.68 800 782 148.5
B 12 111 17914 115.39 800 782 148.5
C 14 238 124490 699.94 764 768 176.8
C 7 247 13103 69.78 764 768 176.8
C 10 91 6877 34.56 764 768 176.8
D 1 52 5243561 31472.21 692 672 166.6
D 8 195 669982 4017.76 692 672 166.6
D 12 233 50188 297.24 692 672 166.6

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