ASTROSAT CZTI

Data Quality Report

Orbit 01219

Creation date: 2024-06-27T14:09:18.646494
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_007T02_9000000220_01219cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01219cztM0_level2_quad_clean.evt
Size (bytes)1,305,371,520101,027,520
Size1.2 GB 96.3 MB
Events in quadrant A8,917,254672,557
Events in quadrant B9,179,022672,029
Events in quadrant C8,414,664649,073
Events in quadrant D12,573,322590,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312902
B0320801
C0298501
D0423141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68141321.937188%
B6814851.247432%
C6814390.572351%
D6814111316.334018%

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 6934 6816 631 631 9.10% 9.26%
B 6934 6815 605 605 8.73% 8.88%
C 6934 6815 357 357 5.15% 5.24%
D 6933 6815 2594 2594 37.42% 38.06%

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 15 127 445470 831.25 2202 2219 533.2
A 13 34 16122 26.07 2202 2219 533.2
A 11 79 8180 11.18 2202 2219 533.2
B 2 32 208437 381.01 2257 2261 541.1
B 12 52 127259 230.99 2257 2261 541.1
B 6 53 75847 135.98 2257 2261 541.1
C 15 241 360756 628.42 2039 2111 570.7
C 3 79 41923 69.76 2039 2111 570.7
C 3 111 31643 51.75 2039 2111 570.7
D 1 239 4858179 8036.52 1933 2003 604.3
D 13 70 176222 288.32 1933 2003 604.3
D 1 83 76141 122.69 1933 2003 604.3

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