ASTROSAT CZTI

Data Quality Report

Orbit 12823

Creation date: 2024-06-27T16:32:46.515614
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/AS1G08_071T01_9000001888_12823cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12823cztM0_level2_quad_clean.evt
Size (bytes)508,492,80069,750,720
Size484.9 MB 66.5 MB
Events in quadrant A3,429,459426,639
Events in quadrant B4,506,371412,209
Events in quadrant C3,265,142423,286
Events in quadrant D3,765,535404,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141913
B0176492
C0135732
D0152612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63841031.613409%
B63844286.704261%
C6384600.939850%
D63841462.286967%

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 7670 6386 0 0 0.00% 0.00%
B 7670 6386 237 237 3.09% 3.71%
C 7670 6386 0 0 0.00% 0.00%
D 7670 6386 67 67 0.87% 1.05%

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 12 189 80690 460.39 871 856 173.4
A 0 226 7817 40.14 871 856 173.4
A 12 194 6880 34.74 871 856 173.4
B 4 239 884020 5694.22 840 821 155.1
B 0 219 165737 1063.26 840 821 155.1
B 3 64 51616 327.49 840 821 155.1
C 13 61 6016 27.14 837 840 190.7
C 3 202 2153 6.88 837 840 190.7
C 3 203 1919 5.66 837 840 190.7
D 8 195 248467 1255.46 838 818 197.3
D 1 52 202184 1020.83 838 818 197.3
D 13 172 50957 254.18 838 818 197.3

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