ASTROSAT CZTI

Data Quality Report

Orbit 40448

Creation date: 2024-06-27T22:16:13.956999
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/AS1A12_022T01_9000005540_40448cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40448cztM0_level2_quad_clean.evt
Size (bytes)316,065,60087,549,120
Size301.4 MB 83.5 MB
Events in quadrant A2,672,280601,562
Events in quadrant B2,301,191611,957
Events in quadrant C2,433,465577,675
Events in quadrant D3,900,921507,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110813
B0102702
C0102872
D0151132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5026150.298448%
B5026340.676482%
C502670.139276%
D50263346.645444%

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 7090 5027 3 3 0.04% 0.06%
B 7090 5027 16 16 0.23% 0.32%
C 7090 5027 3 3 0.04% 0.06%
D 7090 5026 85 85 1.20% 1.69%

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 465371 4081.23 564 554 113.9
A 3 1 10649 88.64 564 554 113.9
A 7 3 7207 58.42 564 554 113.9
B 4 171 65141 606.98 559 544 106.4
B 3 112 26223 241.29 559 544 106.4
B 12 111 13233 119.23 559 544 106.4
C 15 214 220106 1736.97 551 554 126.4
C 14 254 53983 422.7 551 554 126.4
C 0 10 7113 51.89 551 554 126.4
D 12 227 1498669 11302.73 535 519 132.5
D 12 191 115756 869.4 535 519 132.5
D 2 250 112610 845.67 535 519 132.5

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