ASTROSAT CZTI

Data Quality Report

Orbit 08317

Creation date: 2024-06-27T15:30:53.867642
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/AS1A03_093T01_9000001156_08317cztM0_level2.evt modeM0/AS1A03_093T01_9000001156_08317cztM0_level2_quad_clean.evt
Size (bytes)1,508,149,440250,410,240
Size1.4 GB 238.8 MB
Events in quadrant A13,518,1931,414,572
Events in quadrant B10,810,6391,579,722
Events in quadrant C9,860,1761,542,761
Events in quadrant D9,970,2281,504,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0555185
B0471994
C0453484
D0461964

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04520
B04520
C04520
D04520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2241614466.450749%
B224161460.651320%
C22416230.102605%
D22416420.187366%

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 25256 22420 1210 1210 4.79% 5.40%
B 25256 22420 33 33 0.13% 0.15%
C 25256 22420 0 0 0.00% 0.00%
D 25256 22420 19 19 0.08% 0.08%

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 15 234 3262497 6506.56 2462 2407 501.0
A 0 23 385834 765.25 2462 2407 501.0
A 15 239 283929 561.87 2462 2407 501.0
B 0 214 229589 455.94 2618 2553 498.0
B 0 187 154678 305.5 2618 2553 498.0
B 4 81 103162 202.04 2618 2553 498.0
C 9 54 20022 29.9 2520 2530 585.0
C 13 61 19311 28.69 2520 2530 585.0
C 8 128 11502 15.34 2520 2530 585.0
D 2 14 184674 283.82 2505 2442 642.1
D 12 233 103477 157.36 2505 2442 642.1
D 2 234 74228 111.81 2505 2442 642.1

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