ASTROSAT CZTI

Data Quality Report

Orbit 13962

Creation date: 2024-06-27T16:48:28.895157
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/AS1A04_225T01_9000002062_13962cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13962cztM0_level2_quad_clean.evt
Size (bytes)2,390,544,000404,447,040
Size2.2 GB 385.7 MB
Events in quadrant A17,570,7542,519,375
Events in quadrant B15,624,1362,611,053
Events in quadrant C15,087,4772,546,280
Events in quadrant D21,990,4822,408,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06400
B06400
C06400
D06400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0733058
B0670067
C0651157
D0864797

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3149115244.839478%
B314918222.610270%
C314915851.857674%
D3149116045.093519%

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 34297 31501 724 724 2.11% 2.30%
B 34297 31501 113 113 0.33% 0.36%
C 34297 31501 6 6 0.02% 0.02%
D 34297 31501 869 869 2.53% 2.76%

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 14 111 2945979 3933.34 3688 3597 748.1
A 15 222 140631 183.18 3688 3597 748.1
A 15 69 97433 125.44 3688 3597 748.1
B 3 64 238940 334.59 3734 3626 703.3
B 4 80 215811 301.7 3734 3626 703.3
B 3 209 153744 213.45 3734 3626 703.3
C 3 233 782404 922.19 3658 3668 844.4
C 13 61 26179 26.66 3658 3668 844.4
C 14 234 22516 22.32 3658 3668 844.4
D 13 122 3300845 3472.55 3549 3482 949.6
D 1 52 1767153 1857.37 3549 3482 949.6
D 7 80 1100134 1154.92 3549 3482 949.6

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