ASTROSAT CZTI

Data Quality Report

Orbit 24321

Creation date: 2024-06-27T19:04:44.710281
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_145T01_9000003594_24321cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24321cztM0_level2_quad_clean.evt
Size (bytes)687,813,120104,149,440
Size655.9 MB 99.3 MB
Events in quadrant A3,450,137668,202
Events in quadrant B5,958,423682,908
Events in quadrant C6,344,531641,943
Events in quadrant D4,578,470646,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151072
B0224442
C0240862
D0187012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73831051.422186%
B73832713.670595%
C73826929.374153%
D73821622.194527%

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 7873 7383 0 0 0.00% 0.00%
B 7873 7383 0 0 0.00% 0.00%
C 7872 7382 390 390 4.95% 5.28%
D 7872 7382 79 79 1.00% 1.07%

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 3 1 16741 88.78 890 870 178.8
A 13 254 10468 53.69 890 870 178.8
A 3 137 8311 41.62 890 870 178.8
B 4 200 2439865 14298.95 886 864 170.6
B 0 219 38165 218.68 886 864 170.6
B 12 111 20951 117.76 886 864 170.6
C 2 16 1738557 8915.27 835 841 194.9
C 7 247 731400 3748.1 835 841 194.9
C 3 233 477972 2447.9 835 841 194.9
D 1 52 754733 3552.69 863 835 212.2
D 12 218 454575 2138.22 863 835 212.2
D 8 195 70736 329.4 863 835 212.2

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