ASTROSAT CZTI

Data Quality Report

Orbit 33436

Creation date: 2024-06-27T20:48:48.434250
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_046T04_9000004792_33436cztM0_level2.evt modeM0/AS1A11_046T04_9000004792_33436cztM0_level2_quad_clean.evt
Size (bytes)549,308,16086,212,800
Size523.9 MB 82.2 MB
Events in quadrant A2,406,235596,823
Events in quadrant B4,313,008572,107
Events in quadrant C2,556,051596,398
Events in quadrant D7,033,813506,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099301
B0160601
C0104731
D0242811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A483130.062099%
B483161012.626785%
C4831290.600290%
D4831116124.032291%

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 6774 4832 0 0 0.00% 0.00%
B 6774 4832 501 501 7.40% 10.37%
C 6774 4832 29 29 0.43% 0.60%
D 6774 4832 1212 1212 17.89% 25.08%

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 15 47 207301 1850.12 565 556 111.7
A 13 6 10722 90.97 565 556 111.7
A 13 254 8343 69.68 565 556 111.7
B 5 172 1810982 17748.09 540 527 102.0
B 0 219 217083 2122.92 540 527 102.0
B 5 255 35759 345.38 540 527 102.0
C 15 214 209023 1662.88 548 551 125.4
C 0 10 108411 860.35 548 551 125.4
C 9 187 43623 343.56 548 551 125.4
D 1 52 3285089 26937.37 500 484 121.9
D 8 195 1352396 11087.16 500 484 121.9
D 2 250 114914 938.45 500 484 121.9

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