ASTROSAT CZTI

Data Quality Report

Orbit 47675

Creation date: 2024-07-22T12:32:01.232895
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/AS1A13_082T01_9000006342_47675cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47675cztM0_level2_quad_clean.evt
Size (bytes)455,230,080108,028,800
Size434.1 MB 103.0 MB
Events in quadrant A7,017,145704,245
Events in quadrant B3,249,762738,336
Events in quadrant C3,000,286712,440
Events in quadrant D3,070,473654,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255832
B0141752
C0136312
D0140292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66172263.415445%
B6617370.559166%
C6617220.332477%
D6617310.468490%

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 7647 6618 97 97 1.27% 1.47%
B 7647 6618 5 5 0.07% 0.08%
C 7647 6618 6 6 0.08% 0.09%
D 7647 6618 15 15 0.20% 0.23%

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 10 83 3955612 25430.8 740 723 155.5
A 13 248 111796 714.22 740 723 155.5
A 9 191 88610 565.13 740 723 155.5
B 0 200 125317 835.8 745 718 149.1
B 0 190 124827 832.51 745 718 149.1
B 12 111 19053 122.99 745 718 149.1
C 14 254 77895 440.25 742 747 175.2
C 1 176 14764 79.99 742 747 175.2
C 12 249 9475 49.81 742 747 175.2
D 7 38 76194 405.12 741 719 186.3
D 2 249 46566 246.09 741 719 186.3
D 2 234 29201 152.88 741 719 186.3

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