ASTROSAT CZTI

Data Quality Report

Orbit 36715

Creation date: 2024-06-27T21:30:42.541867
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_101T01_9000005238_36715cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36715cztM0_level2_quad_clean.evt
Size (bytes)478,918,08058,510,080
Size456.7 MB 55.8 MB
Events in quadrant A2,932,636346,935
Events in quadrant B3,208,108349,443
Events in quadrant C4,079,276332,062
Events in quadrant D3,876,590323,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124703
B0133452
C0158042
D0154722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5995130.216847%
B5995370.617181%
C59953485.804837%
D59951442.402002%

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 7278 5997 3 3 0.04% 0.05%
B 7278 5997 19 19 0.26% 0.32%
C 7278 5997 296 296 4.07% 4.94%
D 7278 5997 134 134 1.84% 2.23%

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 237507 1704.35 682 669 139.0
A 9 143 18416 127.71 682 669 139.0
A 5 168 15622 107.61 682 669 139.0
B 0 221 180080 1384.18 675 659 129.6
B 0 189 142853 1096.98 675 659 129.6
B 5 255 86642 663.33 675 659 129.6
C 14 254 879974 5842.43 641 646 150.5
C 0 10 415921 2759.17 641 646 150.5
C 15 214 266392 1765.67 641 646 150.5
D 12 233 385393 2380.44 655 637 161.6
D 13 249 273456 1687.9 655 637 161.6
D 13 36 233680 1441.81 655 637 161.6

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