ASTROSAT CZTI

Data Quality Report

Orbit 47284

Creation date: 2024-06-27T23:33:43.613223
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/AS1A13_025T01_9000006312_47284cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47284cztM0_level2_quad_clean.evt
Size (bytes)543,499,200106,084,800
Size518.3 MB 101.2 MB
Events in quadrant A7,627,564688,372
Events in quadrant B3,531,692755,002
Events in quadrant C3,060,861710,023
Events in quadrant D5,394,952605,171

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269322
B0148772
C0136672
D0203872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64996109.386059%
B64991061.631020%
C6499530.815510%
D64986369.787627%

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 7604 6500 193 193 2.54% 2.97%
B 7604 6500 31 31 0.41% 0.48%
C 7604 6500 11 11 0.14% 0.17%
D 7603 6498 469 469 6.17% 7.22%

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 10 83 3985660 26090.18 742 726 152.7
A 9 191 667565 4365.93 742 726 152.7
A 15 235 49317 318.14 742 726 152.7
B 0 200 202262 1338.23 761 740 150.6
B 14 167 47802 312.52 761 740 150.6
B 12 3 47385 309.75 761 740 150.6
C 12 2 57381 319.77 749 753 177.1
C 10 9 24346 133.23 749 753 177.1
C 0 207 20116 109.34 749 753 177.1
D 14 34 1125115 6295.98 717 695 178.6
D 6 112 802149 4487.6 717 695 178.6
D 12 233 304398 1700.53 717 695 178.6

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