ASTROSAT CZTI

Data Quality Report

Orbit 37612

Creation date: 2024-06-27T21:42:12.426759
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/AS1A11_075T01_9000005342_37612cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37612cztM0_level2_quad_clean.evt
Size (bytes)506,016,00079,087,680
Size482.6 MB 75.4 MB
Events in quadrant A3,314,470483,923
Events in quadrant B3,402,944496,939
Events in quadrant C3,217,995499,313
Events in quadrant D4,948,075461,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138403
B0145112
C0135632
D0193572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499160.246192%
B6499791.215572%
C6499120.184644%
D649966610.247730%

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 9575 6501 10 10 0.10% 0.15%
B 9575 6499 35 35 0.37% 0.54%
C 9575 6499 7 7 0.07% 0.11%
D 9575 6501 639 639 6.67% 9.83%

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 358280 2394.07 736 721 149.4
A 9 143 61217 405.06 736 721 149.4
A 12 189 25973 169.08 736 721 149.4
B 5 172 161429 1142.14 732 711 140.7
B 0 189 76388 537.8 732 711 140.7
B 0 230 59277 416.2 732 711 140.7
C 15 214 299761 1786.79 719 724 167.4
C 0 10 51086 300.92 719 724 167.4
C 12 249 27816 161.88 719 724 167.4
D 2 249 1617533 9852.98 682 663 164.1
D 2 153 192663 1170.02 682 663 164.1
D 2 250 124212 752.89 682 663 164.1

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