ASTROSAT CZTI

Data Quality Report

Orbit 34320

Creation date: 2022-02-04T10:44:19.682323
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_012T02_9000004898_34320cztM0_level2.evt modeM0/AS1A05_012T02_9000004898_34320cztM0_level2_quad_clean.evt
Size (bytes)609,742,080100,920,960
Size581.5 MB 96.2 MB
Events in quadrant A2,585,183705,219
Events in quadrant B3,098,562721,889
Events in quadrant C3,634,665700,257
Events in quadrant D8,804,953572,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108252
B0124321
C0141061
D0296781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5072170.335174%
B5072721.419558%
C50722364.652997%
D5072172534.010252%

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 7104 5073 8 8 0.11% 0.16%
B 7104 5073 48 48 0.68% 0.95%
C 7104 5073 175 175 2.46% 3.45%
D 7104 5072 1726 1726 24.30% 34.03%

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 9 191 39553 298.39 649 638 130.4
A 10 83 29376 220.35 649 638 130.4
A 13 6 9506 68.0 649 638 130.4
B 5 172 264211 2178.76 652 638 121.0
B 5 31 65868 539.21 652 638 121.0
B 0 199 62135 508.35 652 638 121.0
C 14 254 719214 4941.92 637 644 145.4
C 15 214 211093 1447.35 637 644 145.4
C 0 10 177262 1214.68 637 644 145.4
D 12 227 3144394 23487.33 559 546 133.9
D 12 235 1729023 12913.25 559 546 133.9
D 1 52 678426 5064.36 559 546 133.9

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