ASTROSAT CZTI

Data Quality Report

Orbit 21360

Creation date: 2024-06-27T18:26:46.098520
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_041T01_9000003150_21360cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21360cztM0_level2_quad_clean.evt
Size (bytes)535,835,52079,692,480
Size511.0 MB 76.0 MB
Events in quadrant A3,314,885501,731
Events in quadrant B3,366,673507,963
Events in quadrant C4,822,846476,442
Events in quadrant D4,276,523466,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136972
B0139632
C0187502
D0170192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6593600.910056%
B6593671.016229%
C65932724.125588%
D65931872.836342%

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 7633 6593 0 0 0.00% 0.00%
B 7633 6593 5 5 0.07% 0.08%
C 7633 6593 105 105 1.38% 1.59%
D 7633 6593 145 145 1.90% 2.20%

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 5 168 91480 540.05 837 819 167.9
A 13 254 8543 46.01 837 819 167.9
A 0 226 7193 37.97 837 819 167.9
B 0 230 52311 323.45 830 811 159.2
B 0 197 43996 271.22 830 811 159.2
B 3 64 25146 152.84 830 811 159.2
C 3 233 1629815 8899.54 787 795 183.0
C 14 238 123444 670.05 787 795 183.0
C 13 61 5448 25.42 787 795 183.0
D 12 235 830165 4235.31 805 784 195.8
D 1 52 331136 1686.97 805 784 195.8
D 13 172 54800 275.84 805 784 195.8

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