ASTROSAT CZTI

Data Quality Report

Orbit 34486

Creation date: 2022-02-13T06:44:57.396226
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/AS1A10_071T14_9000004924_34486cztM0_level2.evt modeM0/AS1A10_071T14_9000004924_34486cztM0_level2_quad_clean.evt
Size (bytes)113,284,80021,170,880
Size108.0 MB 20.2 MB
Events in quadrant A991,345134,931
Events in quadrant B721,433138,229
Events in quadrant C697,581136,856
Events in quadrant D926,053129,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038921
B030811
C028911
D037211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134314310.647803%
B1343292.159345%
C1343130.967982%
D1343312.308265%

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 2686 1344 85 85 3.16% 6.32%
B 2686 1344 16 16 0.60% 1.19%
C 2686 1344 7 7 0.26% 0.52%
D 2686 1344 27 27 1.01% 2.01%

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 406225 13165.97 144 141 30.8
A 10 83 16378 526.43 144 141 30.8
A 10 255 4912 154.68 144 141 30.8
B 5 172 68187 2208.37 150 146 30.8
B 0 189 23680 763.83 150 146 30.8
B 5 255 14007 449.88 150 146 30.8
C 15 214 59981 1643.69 148 149 36.4
C 0 10 40825 1117.44 148 149 36.4
C 14 67 10766 291.67 148 149 36.4
D 8 195 182308 4900.19 144 140 37.2
D 12 218 69418 1863.53 144 140 37.2
D 5 171 25228 674.85 144 140 37.2

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