ASTROSAT CZTI

Data Quality Report

Orbit 34189

Creation date: 2024-06-27T20:57:34.703315
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/AS1A11_047T15_9000004882_34189cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34189cztM0_level2_quad_clean.evt
Size (bytes)553,023,36078,039,360
Size527.4 MB 74.4 MB
Events in quadrant A2,971,346519,196
Events in quadrant B3,923,866523,263
Events in quadrant C5,329,424482,989
Events in quadrant D4,182,726484,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119553
B0150892
C0191582
D0159762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50422474.898850%
B50422995.930186%
C504293418.524395%
D50421462.895676%

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 6985 5043 211 211 3.02% 4.18%
B 6985 5043 200 200 2.86% 3.97%
C 6985 5043 716 716 10.25% 14.20%
D 6985 5043 108 108 1.55% 2.14%

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 501729 4005.49 627 618 125.1
A 10 83 22560 175.39 627 618 125.1
A 13 6 21130 163.96 627 618 125.1
B 5 31 609206 5171.83 627 613 117.7
B 5 172 538828 4573.76 627 613 117.7
B 5 15 197393 1672.24 627 613 117.7
C 14 254 2451368 18497.55 576 583 132.5
C 0 10 299645 2257.2 576 583 132.5
C 15 214 215679 1623.46 576 583 132.5
D 8 195 997949 5997.15 609 597 166.3
D 7 223 186348 1116.93 609 597 166.3
D 7 80 164056 982.89 609 597 166.3

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