ASTROSAT CZTI

Data Quality Report

Orbit 31758

Creation date: 2024-06-27T20:32:22.426693
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_059T01_9000004634_31758cztM0_level2.evt modeM0/AS1A10_059T01_9000004634_31758cztM0_level2_quad_clean.evt
Size (bytes)766,468,800107,023,680
Size731.0 MB 102.1 MB
Events in quadrant A6,399,237674,503
Events in quadrant B6,067,496742,408
Events in quadrant C4,688,952704,754
Events in quadrant D5,641,391688,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232021
B0222551
C0181011
D0208411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169130721.186578%
B61695328.623764%
C61694357.051386%
D61693816.176041%

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 7524 6170 722 722 9.60% 11.70%
B 7524 6170 289 289 3.84% 4.68%
C 7524 6170 212 212 2.82% 3.44%
D 7524 6170 271 271 3.60% 4.39%

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 0 13 3394750 22417.05 766 756 151.4
A 14 238 44082 286.16 766 756 151.4
A 13 254 11134 68.55 766 756 151.4
B 6 159 1747274 11524.07 817 802 151.5
B 5 172 970927 6401.35 817 802 151.5
B 0 229 82785 540.96 817 802 151.5
C 0 10 1079548 6079.75 773 779 177.4
C 3 233 220717 1239.53 773 779 177.4
C 10 22 195313 1096.36 773 779 177.4
D 8 195 1232942 6632.58 792 773 185.8
D 12 218 949097 5104.69 792 773 185.8
D 12 233 141655 758.35 792 773 185.8

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