ASTROSAT CZTI

Data Quality Report

Orbit 01386

Creation date: 2024-06-27T14:11:54.089348
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/AS1G04_014T02_9000000232_01386cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01386cztM0_level2_quad_clean.evt
Size (bytes)1,172,574,72096,552,000
Size1.1 GB 92.1 MB
Events in quadrant A11,166,930596,655
Events in quadrant B8,085,622648,724
Events in quadrant C7,665,551629,062
Events in quadrant D8,166,159598,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378822
B0286161
C0273611
D0289291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646085313.204334%
B6460230.356037%
C6460130.201238%
D64603976.145511%

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 7504 6460 1959 1959 26.11% 30.33%
B 7505 6460 215 215 2.86% 3.33%
C 7505 6460 148 148 1.97% 2.29%
D 7505 6460 665 665 8.86% 10.29%

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 15 127 3915168 8778.87 1871 1889 445.8
A 3 80 41699 89.31 1871 1889 445.8
A 13 17 18859 38.07 1871 1889 445.8
B 6 53 98187 199.76 2045 2051 481.3
B 5 249 43954 87.07 2045 2051 481.3
B 15 22 38507 75.75 2045 2051 481.3
C 15 241 172663 323.66 1901 1967 527.4
C 3 79 24607 42.93 1901 1967 527.4
C 3 111 23700 41.21 1901 1967 527.4
D 13 73 1354304 2449.61 1785 1852 552.1
D 2 16 39821 68.77 1785 1852 552.1
D 2 88 25170 42.23 1785 1852 552.1

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