ASTROSAT CZTI

Data Quality Report

Orbit 33759

Creation date: 2024-06-27T20:52:21.001426
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_086T01_9000004820_33759cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33759cztM0_level2_quad_clean.evt
Size (bytes)526,193,28091,627,200
Size501.8 MB 87.4 MB
Events in quadrant A4,169,478589,091
Events in quadrant B3,326,021616,204
Events in quadrant C3,842,604599,375
Events in quadrant D4,227,517587,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161283
B0133672
C0147552
D0163432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545954710.020150%
B54591803.297307%
C54594167.620443%
D54591432.619527%

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 9464 5460 408 408 4.31% 7.47%
B 9464 5460 141 141 1.49% 2.58%
C 9465 5461 391 391 4.13% 7.16%
D 9465 5461 128 128 1.35% 2.34%

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 15 169 1652833 13246.53 621 610 124.7
A 15 237 94967 756.5 621 610 124.7
A 13 6 14772 113.54 621 610 124.7
B 5 172 550202 4470.46 640 624 122.9
B 5 255 84311 680.74 640 624 122.9
B 4 251 54669 439.62 640 624 122.9
C 9 187 969213 6960.32 605 611 139.2
C 15 214 231131 1656.5 605 611 139.2
C 0 10 136628 977.41 605 611 139.2
D 8 195 970913 6275.05 626 610 154.6
D 2 250 298921 1929.21 626 610 154.6
D 1 47 220544 1422.34 626 610 154.6

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