ASTROSAT CZTI

Data Quality Report

Orbit 24177

Creation date: 2024-06-27T19:03:08.217693
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/AS1A07_067T01_9000003578_24177cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24177cztM0_level2_quad_clean.evt
Size (bytes)889,375,68081,866,880
Size848.2 MB 78.1 MB
Events in quadrant A3,784,821519,307
Events in quadrant B3,804,639526,482
Events in quadrant C4,280,417500,809
Events in quadrant D14,542,811394,101

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161092
B0160872
C0175383
D0484832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77271982.562443%
B77272202.847159%
C77263324.297178%
D7726423754.840797%

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 7857 7729 0 0 0.00% 0.00%
B 7857 7727 0 0 0.00% 0.00%
C 7856 7727 45 45 0.57% 0.58%
D 7856 7726 3710 3710 47.23% 48.02%

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 13 170 16878 81.04 977 956 196.5
A 13 254 11650 54.43 977 956 196.5
A 3 137 8931 40.59 977 956 196.5
B 12 111 22746 116.18 966 940 187.7
B 11 111 20608 104.79 966 940 187.7
B 14 111 17685 89.22 966 940 187.7
C 2 16 476898 2219.66 921 925 214.4
C 14 238 145765 675.45 921 925 214.4
C 0 239 39075 177.91 921 925 214.4
D 7 238 6621394 37302.98 724 701 177.5
D 12 218 4616230 26005.28 724 701 177.5
D 8 195 289301 1626.06 724 701 177.5

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