ASTROSAT CZTI

Data Quality Report

Orbit 30108

Creation date: 2024-06-27T20:10:59.647154
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_019T01_9000004332_30108cztM0_level2.evt modeM0/AS1C05_019T01_9000004332_30108cztM0_level2_quad_clean.evt
Size (bytes)538,355,520134,706,240
Size513.4 MB 128.5 MB
Events in quadrant A3,160,667951,551
Events in quadrant B4,906,096953,994
Events in quadrant C3,192,044896,937
Events in quadrant D4,619,866839,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0161
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01312116
B01905232
C01331411
D01785128

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01284

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284300.477403%
B6280741.178344%
C6286941.495387%
D62844947.861235%

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 7625 6290 3 3 0.04% 0.05%
B 7625 6291 6 6 0.08% 0.10%
C 7625 6291 23 23 0.30% 0.37%
D 7625 6291 464 464 6.09% 7.38%

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 8 192 24656 150.7 809 796 158.3
A 14 238 18201 109.93 809 796 158.3
A 13 254 10802 63.2 809 796 158.3
B 6 159 1722566 11587.9 798 781 148.6
B 0 190 39962 263.69 798 781 148.6
B 12 111 17380 111.71 798 781 148.6
C 14 238 129843 742.81 756 760 173.8
C 10 20 67179 382.21 756 760 173.8
C 0 10 24139 134.53 756 760 173.8
D 7 238 981836 5841.31 721 705 168.0
D 13 104 608340 3617.64 721 705 168.0
D 8 195 188741 1119.5 721 705 168.0

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