ASTROSAT CZTI

Data Quality Report

Orbit 01279

Creation date: 2024-06-27T14:10:18.100491
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_011T02_9000000226_01279cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01279cztM0_level2_quad_clean.evt
Size (bytes)1,559,085,120104,889,600
Size1.5 GB 100.0 MB
Events in quadrant A9,012,929698,949
Events in quadrant B9,797,614698,275
Events in quadrant C9,905,499682,762
Events in quadrant D18,033,411598,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317981
B0342030
C0344940
D0588720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7140520.728291%
B7140741.036415%
C7140771.078431%
D7140222431.148459%

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 7140 7140 448 448 6.27% 6.27%
B 7140 7140 679 679 9.51% 9.51%
C 7140 7140 918 918 12.86% 12.86%
D 7140 7140 5668 5668 79.38% 79.38%

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 12 243 208237 372.99 2283 2298 552.1
A 8 14 18444 29.24 2283 2298 552.1
A 0 183 13246 19.83 2283 2298 552.1
B 8 4 368146 655.56 2356 2364 558.0
B 6 53 112865 198.04 2356 2364 558.0
B 15 22 108370 189.99 2356 2364 558.0
C 8 208 579570 974.98 2122 2195 592.2
C 9 52 566587 953.05 2122 2195 592.2
C 15 241 365541 613.56 2122 2195 592.2
D 13 169 9967150 16362.2 1969 2034 609.0
D 13 70 405407 662.32 1969 2034 609.0
D 10 84 165281 268.04 1969 2034 609.0

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