ASTROSAT CZTI

Data Quality Report

Orbit 06848

Creation date: 2024-06-27T15:12:25.337113
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/AS1G06_168T13_9000000942_06848cztM0_level2.evt modeM0/AS1G06_168T13_9000000942_06848cztM0_level2_quad_clean.evt
Size (bytes)344,116,80065,825,280
Size328.2 MB 62.8 MB
Events in quadrant A2,605,412416,294
Events in quadrant B2,337,805424,727
Events in quadrant C2,473,303414,730
Events in quadrant D2,686,606409,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107952
B0100681
C0104961
D0111981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4670631.349036%
B4670701.498929%
C46701252.676660%
D46701753.747323%

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 5690 4671 4 4 0.07% 0.09%
B 5690 4671 2 2 0.04% 0.04%
C 5690 4671 60 60 1.05% 1.28%
D 5690 4671 115 115 2.02% 2.46%

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 8 15 358379 3066.87 563 549 116.7
A 15 239 44352 375.42 563 549 116.7
A 13 248 26588 223.17 563 549 116.7
B 4 48 29716 262.93 569 556 110.9
B 3 220 28819 254.85 569 556 110.9
B 0 219 22583 198.62 569 556 110.9
C 9 68 318402 2485.85 545 548 127.9
C 9 247 11731 87.46 545 548 127.9
C 10 22 6744 48.46 545 548 127.9
D 2 33 469303 3473.34 545 528 135.0
D 8 195 97904 721.5 545 528 135.0
D 2 136 19313 139.19 545 528 135.0

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