ASTROSAT CZTI

Data Quality Report

Orbit 33100

Creation date: 2024-06-27T20:44:51.058817
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_008T06_9000004762_33100cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33100cztM0_level2_quad_clean.evt
Size (bytes)636,488,64082,339,200
Size607.0 MB 78.5 MB
Events in quadrant A2,946,969562,065
Events in quadrant B3,376,526561,369
Events in quadrant C4,024,080543,717
Events in quadrant D8,509,555393,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125553
B0137142
C0158142
D0296522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A619650.080697%
B6196941.517108%
C61962584.163977%
D6196188430.406714%

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 9422 6198 0 0 0.00% 0.00%
B 9422 6198 53 53 0.56% 0.86%
C 9422 6198 196 196 2.08% 3.16%
D 9422 6198 1440 1440 15.28% 23.23%

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 13 6 11021 67.45 757 741 152.4
A 13 254 10649 65.01 757 741 152.4
A 15 169 8045 47.93 757 741 152.4
B 5 172 197362 1372.75 749 730 143.2
B 5 200 64161 442.83 749 730 143.2
B 0 189 55206 380.31 749 730 143.2
C 1 23 743290 4453.25 719 725 166.7
C 0 10 250179 1496.0 719 725 166.7
C 7 221 172718 1031.46 719 725 166.7
D 7 223 2123701 13417.99 604 591 158.2
D 12 218 2017295 12745.5 604 591 158.2
D 8 195 638598 4032.18 604 591 158.2

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