ASTROSAT CZTI

Data Quality Report

Orbit 34827

Creation date: 2022-03-08T07:02:08.213866
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/AS1C07_005T01_9000004992_34827cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34827cztM0_level2_quad_clean.evt
Size (bytes)788,146,56073,992,960
Size751.6 MB 70.6 MB
Events in quadrant A2,888,168585,495
Events in quadrant B12,878,521204,390
Events in quadrant C3,005,980579,949
Events in quadrant D4,758,158517,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115623
B0416952
C0121272
D0177012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5009310.618886%
B50095009100.000000%
C5009541.078059%
D50095009.982032%

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 7072 5010 18 18 0.25% 0.36%
B 7071 5008 4946 4946 69.95% 98.76%
C 7072 5010 41 41 0.58% 0.82%
D 7071 5009 461 461 6.52% 9.20%

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 273844 2207.34 628 618 123.8
A 15 174 85253 683.75 628 618 123.8
A 10 83 48679 388.27 628 618 123.8
B 5 14 3674399 80032.18 238 233 45.9
B 5 31 3606995 78563.96 238 233 45.9
B 5 15 3597048 78347.29 238 233 45.9
C 15 214 232162 1653.47 616 620 140.0
C 14 67 184394 1312.35 616 620 140.0
C 0 10 156231 1111.24 616 620 140.0
D 14 52 1502580 10624.07 585 570 141.4
D 8 195 326083 2302.43 585 570 141.4
D 14 226 115883 815.64 585 570 141.4

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