ASTROSAT CZTI

Data Quality Report

Orbit 20220219_A05_176T03_9000004942_level2

Creation date: 2022-02-23T13:50:14.784127
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/AS1A05_176T03_9000004942cztM0_level2_bc.evt modeM0/AS1A05_176T03_9000004942cztM0_level2_quad_clean.evt
Size (bytes)452,551,68063,766,080
Size431.6 MB 60.8 MB
Events in quadrant A1,582,790386,408
Events in quadrant B2,533,987374,295
Events in quadrant C1,990,861369,616
Events in quadrant D7,144,498341,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138000
B0179460
C0150920
D0325600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A657760.091227%
B65772243.405808%
C65771472.235062%
D6577127319.355329%

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 8699 6577 0 0 0.00% 0.00%
B 8699 6576 26 26 0.30% 0.40%
C 8699 6576 11 11 0.13% 0.17%
D 8699 6576 420 420 4.83% 6.39%

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 10 83 43275 497.19 391 385 86.3
A 13 6 12279 137.88 391 385 86.3
A 13 254 11087 124.06 391 385 86.3
B 5 172 570706 7480.78 384 378 76.2
B 0 189 194935 2551.93 384 378 76.2
B 0 190 156124 2042.86 384 378 76.2
C 15 214 262719 3152.97 372 370 83.2
C 0 207 128392 1538.59 372 370 83.2
C 0 10 98864 1183.72 372 370 83.2
D 8 195 3009329 35378.52 355 344 85.1
D 1 47 1121534 13182.53 355 344 85.1
D 1 52 816177 9592.26 355 344 85.1

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