ASTROSAT CZTI

Data Quality Report

Orbit 27554

Creation date: 2024-06-27T19:41:27.237667
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/AS1C05_019T04_9000003956_27554cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27554cztM0_level2_quad_clean.evt
Size (bytes)1,811,318,400370,926,720
Size1.7 GB 353.7 MB
Events in quadrant A10,874,1582,473,229
Events in quadrant B12,354,2242,485,421
Events in quadrant C12,827,1162,374,446
Events in quadrant D17,203,1182,273,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481380
B0520880
C0533350
D0669310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A236601880.794590%
B236614822.037107%
C236617092.996492%
D2366116086.795993%

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 25775 23661 0 0 0.00% 0.00%
B 25776 23662 175 175 0.68% 0.74%
C 25776 23661 263 263 1.02% 1.11%
D 25776 23662 1202 1202 4.66% 5.08%

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 13 254 38637 63.81 2817 2754 562.3
A 3 137 27851 44.63 2817 2754 562.3
A 0 226 23703 37.25 2817 2754 562.3
B 10 245 1065359 2015.38 2786 2710 527.3
B 15 32 166693 311.0 2786 2710 527.3
B 3 64 119174 220.88 2786 2710 527.3
C 7 221 1445835 2287.03 2701 2713 631.0
C 14 238 435238 685.46 2701 2713 631.0
C 2 16 284518 446.6 2701 2713 631.0
D 1 52 6520004 10171.45 2676 2597 640.8
D 2 250 379417 588.09 2676 2597 640.8
D 2 234 108915 165.93 2676 2597 640.8

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