ASTROSAT CZTI

Data Quality Report

Orbit 42532

Creation date: 2024-06-27T22:41:17.677571
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/AS1A09_002T01_9000005810_42532cztM0_level2.fits modeM0/AS1A09_002T01_9000005810_42532cztM0_level2_quad_clean.evt
Size (bytes)294,128,64093,816,000
Size280.5 MB 89.5 MB
Events in quadrant A2,843,436635,617
Events in quadrant B2,386,850651,327
Events in quadrant C2,562,888629,287
Events in quadrant D2,704,009573,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113192
B0103182
C0104782
D0113572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5007110.219692%
B5007100.199720%
C500740.079888%
D5007480.958658%

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 7068 5008 2 2 0.03% 0.04%
B 7068 5008 4 4 0.06% 0.08%
C 7068 5008 0 0 0.00% 0.00%
D 7068 5008 50 50 0.71% 1.00%

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 10 83 538648 4561.35 585 575 118.0
A 7 3 15688 128.12 585 575 118.0
A 2 79 13655 110.88 585 575 118.0
B 5 255 66795 612.43 577 562 108.1
B 0 245 28757 260.71 577 562 108.1
B 5 172 15931 142.11 577 562 108.1
C 15 214 211954 1616.77 574 580 130.7
C 9 54 58105 440.0 574 580 130.7
C 0 239 32029 240.55 574 580 130.7
D 1 47 153216 1114.85 573 559 136.9
D 1 52 107012 777.42 573 559 136.9
D 12 6 104717 760.66 573 559 136.9

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