ASTROSAT CZTI

Data Quality Report

Orbit 19876

Creation date: 2024-06-27T18:08:12.271606
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/AS1T03_118T01_9000002962_19876cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19876cztM0_level2_quad_clean.evt
Size (bytes)597,055,68097,499,520
Size569.4 MB 93.0 MB
Events in quadrant A5,048,231621,419
Events in quadrant B3,838,073636,591
Events in quadrant C4,639,086589,396
Events in quadrant D4,061,576596,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197172
B0160822
C0183072
D0169582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72951732.371487%
B72961502.055921%
C72965086.962719%
D72961071.466557%

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 9350 7297 109 109 1.17% 1.49%
B 9351 7297 32 32 0.34% 0.44%
C 9351 7298 231 231 2.47% 3.17%
D 9351 7297 45 45 0.48% 0.62%

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 14 238 1498291 8080.15 919 902 185.3
A 11 29 14484 73.29 919 902 185.3
A 0 226 7807 37.26 919 902 185.3
B 3 64 94786 529.3 924 901 177.4
B 7 220 71417 397.56 924 901 177.4
B 12 111 21741 117.49 924 901 177.4
C 9 221 1052671 5069.91 881 889 207.5
C 14 238 135106 646.97 881 889 207.5
C 7 220 18084 82.89 881 889 207.5
D 1 52 336377 1524.98 906 880 220.0
D 2 184 230741 1044.82 906 880 220.0
D 7 238 60921 272.91 906 880 220.0

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