ASTROSAT CZTI

Data Quality Report

Orbit 00151

Creation date: 2024-06-27T13:57:04.438568
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/AS1P01_120T01_9000000006_00151cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00151cztM0_level2_quad_clean.evt
Size (bytes)935,516,16055,699,200
Size892.2 MB 53.1 MB
Events in quadrant A7,002,830325,814
Events in quadrant B7,096,670332,959
Events in quadrant C6,088,804331,257
Events in quadrant D7,787,369319,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246502
B0249161
C0219101
D0269471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538280.148644%
B5382691.282051%
C538210.018580%
D5382941.746563%

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 6975 5384 222 222 3.18% 4.12%
B 6975 5384 281 281 4.03% 5.22%
C 6975 5384 56 56 0.80% 1.04%
D 6975 5384 580 580 8.32% 10.77%

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 10 234537 831.6 1717 1677 280.0
A 13 146 43361 148.86 1717 1677 280.0
A 13 9 15586 49.67 1717 1677 280.0
B 10 199 208318 553.97 1656 1657 373.1
B 10 48 131057 346.86 1656 1657 373.1
B 0 150 98589 259.83 1656 1657 373.1
C 0 218 79945 184.41 1507 1563 425.0
C 0 188 55691 127.35 1507 1563 425.0
C 9 54 8333 15.93 1507 1563 425.0
D 13 222 490499 1152.46 1609 1621 424.2
D 0 243 292718 686.22 1609 1621 424.2
D 2 70 247843 580.43 1609 1621 424.2

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