ASTROSAT CZTI

Data Quality Report

Orbit 15586

Creation date: 2024-06-27T17:10:45.308687
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/AS1A04_037T02_9000002310_15586cztM0_level2.evt modeM0/AS1A04_037T02_9000002310_15586cztM0_level2_quad_clean.evt
Size (bytes)481,314,24094,947,840
Size459.0 MB 90.5 MB
Events in quadrant A4,011,007599,726
Events in quadrant B3,280,681628,418
Events in quadrant C3,334,610606,336
Events in quadrant D3,510,969589,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158573
B0138102
C0139202
D0147752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64631712.645830%
B6463580.897416%
C6463640.990252%
D6463470.727216%

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 7633 6464 90 90 1.18% 1.39%
B 7634 6465 4 4 0.05% 0.06%
C 7634 6465 0 0 0.00% 0.00%
D 7634 6465 11 11 0.14% 0.17%

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 0 253 716348 4398.21 807 791 162.7
A 15 69 182267 1115.45 807 791 162.7
A 0 226 7131 38.97 807 791 162.7
B 4 48 62770 400.25 815 793 154.8
B 12 111 17636 108.77 815 793 154.8
B 11 111 15154 92.74 815 793 154.8
C 14 238 121038 640.45 798 805 187.7
C 3 233 102138 539.77 798 805 187.7
C 13 61 5644 25.78 798 805 187.7
D 2 16 215620 1096.18 804 782 196.0
D 7 223 72522 366.04 804 782 196.0
D 1 52 56610 284.85 804 782 196.0

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