ASTROSAT CZTI

Data Quality Report

Orbit 20455

Creation date: 2024-06-27T18:15:35.247218
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/AS1A05_160T02_9000003022_20455cztM0_level2.evt modeM0/AS1A05_160T02_9000003022_20455cztM0_level2_quad_clean.evt
Size (bytes)241,908,48027,437,760
Size230.7 MB 26.2 MB
Events in quadrant A1,903,553151,212
Events in quadrant B1,934,137152,905
Events in quadrant C1,596,870147,143
Events in quadrant D1,663,692142,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0748
B0746
C0746
D0746

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08400682
B08583842
C07408612
D07860714

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3323601.805597%
B33181303.918023%
C3335190.569715%
D3326351.052315%

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 3481 3396 12 12 0.34% 0.35%
B 3456 3390 85 85 2.46% 2.51%
C 3495 3402 0 0 0.00% 0.00%
D 3453 3398 28 28 0.81% 0.82%

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 6 240 134940 1620.68 406 398 83.0
A 5 16 111059 1333.02 406 398 83.0
A 12 16 38920 464.03 406 398 83.0
B 10 245 325188 4159.31 403 394 78.1
B 0 189 12418 153.98 403 394 78.1
B 12 111 9227 113.12 403 394 78.1
C 14 238 62050 673.71 389 392 91.5
C 3 233 12250 129.57 389 392 91.5
C 9 221 5705 58.05 389 392 91.5
D 13 153 83948 864.15 389 376 96.7
D 1 52 64029 658.18 389 376 96.7
D 12 218 15866 160.17 389 376 96.7

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