ASTROSAT CZTI

Data Quality Report

Orbit 36400

Creation date: 2022-06-22T13:29:44.691430
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/AS1T04_084T01_9000005198_36400cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36400cztM0_level2_quad_clean.evt
Size (bytes)511,922,88068,132,160
Size488.2 MB 65.0 MB
Events in quadrant A2,796,619428,429
Events in quadrant B4,497,041400,863
Events in quadrant C2,857,119430,457
Events in quadrant D4,959,971398,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119163
B0171232
C0119402
D0186652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A578050.086505%
B57805629.723183%
C5780200.346021%
D578069111.955017%

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 7332 5781 0 0 0.00% 0.00%
B 7332 5781 400 400 5.46% 6.92%
C 7332 5781 12 12 0.16% 0.21%
D 7332 5781 639 639 8.72% 11.05%

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 191595 1405.49 666 650 135.9
A 15 223 18664 132.6 666 650 135.9
A 13 254 9269 63.44 666 650 135.9
B 5 172 1335046 10736.72 632 615 124.3
B 5 255 460945 3703.78 632 615 124.3
B 0 189 135847 1088.07 632 615 124.3
C 15 214 247303 1621.32 645 649 152.1
C 0 10 78325 510.58 645 649 152.1
C 0 207 10165 62.55 645 649 152.1
D 12 227 1227641 8063.11 619 603 152.2
D 12 6 818435 5374.13 619 603 152.2
D 13 171 147429 964.82 619 603 152.2

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