ASTROSAT CZTI

Data Quality Report

Orbit 33244

Creation date: 2024-06-27T20:46:34.278580
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/AS1A11_046T01_9000004776_33244cztM0_level2.evt modeM0/AS1A11_046T01_9000004776_33244cztM0_level2_quad_clean.evt
Size (bytes)664,073,280102,487,680
Size633.3 MB 97.7 MB
Events in quadrant A7,237,618593,773
Events in quadrant B3,692,200714,368
Events in quadrant C2,676,500726,591
Events in quadrant D6,111,936661,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256773
B0148592
C0120902
D0223102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5814207035.603715%
B58143055.245958%
C5814230.395597%
D58143916.725146%

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 8861 5816 1501 1501 16.94% 25.81%
B 8861 5815 191 191 2.16% 3.28%
C 8861 5816 13 13 0.15% 0.22%
D 8861 5815 327 327 3.69% 5.62%

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 15 169 5080868 45950.2 554 545 110.6
A 13 6 12202 105.43 554 545 110.6
A 13 254 8163 68.9 554 545 110.6
B 5 172 796858 6527.79 646 629 122.0
B 4 170 213870 1748.23 646 629 122.0
B 15 85 26557 212.57 646 629 122.0
C 0 10 70450 473.15 642 646 147.5
C 14 254 54012 361.73 642 646 147.5
C 15 208 12371 79.47 642 646 147.5
D 8 195 2135941 13844.78 627 609 154.2
D 12 218 558709 3618.53 627 609 154.2
D 12 3 279355 1807.3 627 609 154.2

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