ASTROSAT CZTI

Data Quality Report

Orbit 39683

Creation date: 2024-06-27T22:07:42.788982
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/AS1A12_051T01_9000005490_39683cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39683cztM0_level2_quad_clean.evt
Size (bytes)742,898,88080,006,400
Size708.5 MB 76.3 MB
Events in quadrant A12,372,446293,532
Events in quadrant B3,006,985666,425
Events in quadrant C8,500,145468,794
Events in quadrant D3,159,215577,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408593
B0130662
C0293852
D0137552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5946390465.657585%
B5946580.975446%
C5946180030.272452%
D59461252.102254%

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 7290 5947 3414 3414 46.83% 57.41%
B 7290 5947 45 45 0.62% 0.76%
C 7290 5947 1581 1581 21.69% 26.58%
D 7290 5947 92 92 1.26% 1.55%

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 15 222 8036571 76358.8 514 503 105.2
A 15 174 1573403 14945.71 514 503 105.2
A 10 83 382576 3630.46 514 503 105.2
B 10 246 196429 1550.79 649 630 126.3
B 5 172 144605 1140.33 649 630 126.3
B 4 170 60467 473.93 649 630 126.3
C 15 208 5131732 39111.66 562 566 131.2
C 9 187 918940 7000.19 562 566 131.2
C 15 214 220394 1675.61 562 566 131.2
D 13 249 323309 2101.1 627 607 153.6
D 2 250 223788 1453.13 627 607 153.6
D 12 227 50076 322.09 627 607 153.6

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