ASTROSAT CZTI

Data Quality Report

Orbit 24832

Creation date: 2024-06-27T19:10:23.147412
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_003T02_9000003630_24832cztM0_level2.evt modeM0/AS1A08_003T02_9000003630_24832cztM0_level2_quad_clean.evt
Size (bytes)892,889,280165,611,520
Size851.5 MB 157.9 MB
Events in quadrant A6,008,1931,058,088
Events in quadrant B6,369,8331,066,501
Events in quadrant C6,068,5901,017,589
Events in quadrant D7,729,976990,683

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262692
B0272102
C0263282
D0315072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127791080.845137%
B127791581.236403%
C127792001.565068%
D127802842.222222%

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 14089 12781 1 1 0.01% 0.01%
B 14089 12781 14 14 0.10% 0.11%
C 14089 12781 0 0 0.00% 0.00%
D 14090 12782 172 172 1.22% 1.35%

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 19054 55.95 1554 1519 313.4
A 3 137 15023 43.09 1554 1519 313.4
A 0 226 13086 36.91 1554 1519 313.4
B 0 189 178023 593.42 1538 1496 297.5
B 10 251 80993 267.24 1538 1496 297.5
B 12 111 37352 120.53 1538 1496 297.5
C 14 238 233387 662.51 1488 1497 350.0
C 7 247 25974 69.93 1488 1497 350.0
C 13 61 10219 24.92 1488 1497 350.0
D 8 195 1143585 3113.41 1503 1459 366.8
D 5 222 803067 2185.16 1503 1459 366.8
D 1 52 64530 171.93 1503 1459 366.8

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