ASTROSAT CZTI

Data Quality Report

Orbit 50927

Creation date: 2025-03-19T13:37:07.039951
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/AS1C07_001T01_9000006450_50927cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50927cztM0_level2_quad_clean.evt
Size (bytes)718,948,80072,604,800
Size685.6 MB 69.2 MB
Events in quadrant A13,906,391108,811
Events in quadrant B4,175,461621,793
Events in quadrant C4,064,351537,343
Events in quadrant D3,995,210506,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454601
B0167871
C0163511
D0162451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6068511184.228741%
B60693195.256220%
C60694026.623826%
D60683686.064601%

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 7172 6067 4661 4661 64.99% 76.83%
B 7174 6069 200 200 2.79% 3.30%
C 7174 6070 361 361 5.03% 5.95%
D 7173 6068 357 357 4.98% 5.88%

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 14 254 11884828 173660.99 264 256 68.4
A 4 4 537212 7846.16 264 256 68.4
A 12 3 112499 1640.13 264 256 68.4
B 10 254 1313315 9744.78 636 613 134.7
B 0 171 87058 641.72 636 613 134.7
B 10 247 78286 576.6 636 613 134.7
C 12 252 965003 5781.78 603 597 166.8
C 1 60 173697 1037.76 603 597 166.8
C 13 3 85467 508.81 603 597 166.8
D 7 222 658026 3906.26 606 582 168.3
D 2 249 427967 2539.34 606 582 168.3
D 3 12 135820 803.53 606 582 168.3

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