ASTROSAT CZTI

Data Quality Report

Orbit 34422

Creation date: 2022-02-08T22:19:17.634452
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_108T02_9000004914_34422cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34422cztM0_level2_quad_clean.evt
Size (bytes)494,277,12067,138,560
Size471.4 MB 64.0 MB
Events in quadrant A2,817,663434,351
Events in quadrant B3,405,091436,193
Events in quadrant C3,039,201424,120
Events in quadrant D5,363,219381,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115393
B0134342
C0123342
D0196652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5081370.728203%
B50811192.342059%
C5081390.767565%
D50814518.876205%

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 7175 5082 21 21 0.29% 0.41%
B 7175 5082 70 70 0.98% 1.38%
C 7175 5082 24 24 0.33% 0.47%
D 7175 5082 366 366 5.10% 7.20%

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 9 143 97014 712.08 691 680 135.3
A 10 83 36613 265.61 691 680 135.3
A 13 6 13392 93.96 691 680 135.3
B 0 190 315865 2479.38 682 669 127.1
B 5 172 274071 2150.62 682 669 127.1
B 0 229 88996 694.79 682 669 127.1
C 15 214 215085 1432.37 659 665 149.7
C 0 10 120988 803.79 659 665 149.7
C 14 67 88613 587.51 659 665 149.7
D 8 195 1311092 8602.04 633 618 152.3
D 10 230 451915 2962.34 633 618 152.3
D 7 80 282774 1852.09 633 618 152.3

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