ASTROSAT CZTI

Data Quality Report

Orbit 34377

Creation date: 2022-02-05T21:07:07.963873
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_085T01_9000004910_34377cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34377cztM0_level2_quad_clean.evt
Size (bytes)694,719,36096,016,320
Size662.5 MB 91.6 MB
Events in quadrant A2,742,282696,474
Events in quadrant B4,517,662671,087
Events in quadrant C4,390,397667,205
Events in quadrant D9,023,695492,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115913
B0171112
C0169212
D0306102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541770.129223%
B54174969.156360%
C54171102.030644%
D5418191135.271318%

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 7360 5418 3 3 0.04% 0.06%
B 7360 5418 359 359 4.88% 6.63%
C 7360 5418 114 114 1.55% 2.10%
D 7361 5419 1937 1937 26.31% 35.74%

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 34028 242.68 688 676 137.4
A 9 143 33184 236.54 688 676 137.4
A 13 6 17902 125.34 688 676 137.4
B 5 172 1408598 11316.45 659 644 124.4
B 4 251 192382 1541.1 659 644 124.4
B 0 190 77604 618.57 659 644 124.4
C 4 254 1083171 7284.04 646 651 148.6
C 14 254 351214 2358.86 646 651 148.6
C 15 214 225672 1514.11 646 651 148.6
D 12 235 2704180 20080.16 549 533 134.6
D 7 223 2286918 16981.13 549 533 134.6
D 8 195 789528 5859.92 549 533 134.6

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