ASTROSAT CZTI

Data Quality Report

Orbit 35087

Creation date: 2022-03-28T14:34:25.351487
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/AS1T05_015T01_9000005026_35087cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35087cztM0_level2_quad_clean.evt
Size (bytes)493,583,04057,623,040
Size470.7 MB 55.0 MB
Events in quadrant A2,875,998349,948
Events in quadrant B3,539,965347,273
Events in quadrant C3,487,894348,261
Events in quadrant D4,687,822330,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118193
B0139352
C0136542
D0177902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5262110.209046%
B52621162.204485%
C52622063.914861%
D52621793.401748%

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 7264 5263 2 2 0.03% 0.04%
B 7264 5263 63 63 0.87% 1.20%
C 7264 5263 185 185 2.55% 3.52%
D 7264 5263 146 146 2.01% 2.77%

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 82999 583.53 712 701 141.0
A 9 143 19006 129.79 712 701 141.0
A 13 6 12787 85.7 712 701 141.0
B 5 172 474771 3662.98 699 682 129.4
B 5 255 106028 813.94 699 682 129.4
B 4 232 96003 736.48 699 682 129.4
C 10 49 440786 2852.56 684 691 154.3
C 15 214 221695 1432.48 684 691 154.3
C 0 10 114670 738.78 684 691 154.3
D 8 195 1200228 7190.93 688 671 166.8
D 12 233 269165 1609.53 688 671 166.8
D 2 250 156058 931.49 688 671 166.8

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