ASTROSAT CZTI

Data Quality Report

Orbit 34202

Creation date: 2022-01-25T01:20:42.228406
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_047T15_9000004882_34202cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34202cztM0_level2_quad_clean.evt
Size (bytes)636,577,92061,715,520
Size607.1 MB 58.9 MB
Events in quadrant A2,885,743380,668
Events in quadrant B6,290,339371,208
Events in quadrant C3,475,742375,386
Events in quadrant D6,251,746352,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120703
B0224602
C0136982
D0224802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5549550.991170%
B5549141325.464048%
C55492284.108848%
D554960710.938908%

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 7312 5550 33 33 0.45% 0.59%
B 7312 5550 1146 1146 15.67% 20.65%
C 7312 5550 164 164 2.24% 2.95%
D 7312 5550 509 509 6.96% 9.17%

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 117090 845.53 684 671 137.7
A 9 143 46099 329.93 684 671 137.7
A 15 17 34690 247.07 684 671 137.7
B 5 31 1395227 11629.5 631 615 119.9
B 5 15 1070409 8920.89 631 615 119.9
B 5 14 396513 3301.35 631 615 119.9
C 0 10 377093 2475.46 659 666 152.1
C 15 214 249591 1636.98 659 666 152.1
C 9 187 218789 1434.42 659 666 152.1
D 8 195 1552274 8993.1 647 634 172.5
D 12 217 1043023 6041.55 647 634 172.5
D 2 249 468304 2710.55 647 634 172.5

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