ASTROSAT CZTI

Data Quality Report

Orbit 33439

Creation date: 2024-06-27T20:48:51.490295
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_065T01_9000004794_33439cztM0_level2.evt modeM0/AS1A11_065T01_9000004794_33439cztM0_level2_quad_clean.evt
Size (bytes)465,324,48067,132,800
Size443.8 MB 64.0 MB
Events in quadrant A2,721,563439,725
Events in quadrant B3,327,215424,640
Events in quadrant C2,851,578423,048
Events in quadrant D4,856,473397,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106703
B0128772
C0113372
D0178692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495480.161486%
B49542735.510698%
C4954921.857085%
D49542364.763827%

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 7077 4955 0 0 0.00% 0.00%
B 7077 4955 222 222 3.14% 4.48%
C 7077 4955 88 88 1.24% 1.78%
D 7077 4955 237 237 3.35% 4.78%

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 15 47 299792 2446.24 608 597 122.3
A 14 128 59373 480.55 608 597 122.3
A 13 6 15225 119.6 608 597 122.3
B 5 172 869483 7744.95 588 575 112.2
B 5 255 43318 380.99 588 575 112.2
B 15 85 29830 260.76 588 575 112.2
C 1 23 220524 1688.89 573 578 130.2
C 15 214 216170 1655.46 573 578 130.2
C 0 10 137246 1049.43 573 578 130.2
D 8 195 1473056 9473.05 571 559 155.4
D 1 52 581056 3734.53 571 559 155.4
D 2 250 241584 1550.59 571 559 155.4

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