ASTROSAT CZTI

Data Quality Report

Orbit 39794

Creation date: 2024-06-27T22:09:02.612861
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/AS1T05_086T01_9000005496_39794cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39794cztM0_level2_quad_clean.evt
Size (bytes)27,417,6002,237,760
Size26.1 MB 2.1 MB
Events in quadrant A317,3734,126
Events in quadrant B165,27215,968
Events in quadrant C369,6317,995
Events in quadrant D137,19012,271

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135
B0137
C0126
D0108

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024451335
B01376693
C038002540
D01283660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2707628.148148%
B31210.320513%
C2319541.125541%
D30400.000000%

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 569 314 45 45 7.91% 14.33%
B 618 353 0 0 0.00% 0.00%
C 621 274 64 64 10.31% 23.36%
D 620 367 0 0 0.00% 0.00%

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 9 143 182553 23592.02 27 27 7.7
A 10 83 13024 1679.9 27 27 7.7
A 2 79 12021 1550.26 27 27 7.7
B 5 172 15469 1640.27 36 35 9.4
B 0 190 5597 591.11 36 35 9.4
B 12 111 867 88.42 36 35 9.4
C 9 187 213123 32255.84 20 20 6.6
C 15 208 66539 10068.49 20 20 6.6
C 15 214 7348 1109.19 20 20 6.6
D 2 249 5206 512.24 33 32 10.1
D 2 120 2545 248.79 33 32 10.1
D 2 234 1441 139.49 33 32 10.1

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