ASTROSAT CZTI

Data Quality Report

Orbit 34713

Creation date: 2022-03-02T16:40:20.643680
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/AS1A09_038T41_9000004978_34713cztM0_level2.evt modeM0/AS1A09_038T41_9000004978_34713cztM0_level2_quad_clean.evt
Size (bytes)469,800,000106,488,000
Size448.0 MB 101.6 MB
Events in quadrant A3,605,968724,080
Events in quadrant B3,072,984731,551
Events in quadrant C2,763,143737,928
Events in quadrant D4,451,008684,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141503
B0120622
C0109252
D0165942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4944300.606796%
B49441523.074434%
C4944390.788835%
D49441493.013754%

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 7068 4945 17 17 0.24% 0.34%
B 7068 4945 111 111 1.57% 2.24%
C 7068 4945 34 34 0.48% 0.69%
D 7068 4945 146 146 2.07% 2.95%

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 1114139 9069.49 620 612 122.8
A 10 83 48810 392.56 620 612 122.8
A 9 143 15969 125.08 620 612 122.8
B 5 172 383531 3421.46 608 596 111.9
B 0 182 171961 1531.12 608 596 111.9
B 0 155 57921 512.19 608 596 111.9
C 15 214 216473 1571.75 605 610 137.3
C 0 10 125793 911.49 605 610 137.3
C 15 159 28375 202.16 605 610 137.3
D 8 195 1139843 7380.2 597 583 154.4
D 12 227 267049 1726.18 597 583 154.4
D 2 250 161880 1044.89 597 583 154.4

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