ASTROSAT CZTI

Data Quality Report

Orbit 34961

Creation date: 2022-03-17T08:36:58.701493
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_047T09_9000005010_34961cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34961cztM0_level2_quad_clean.evt
Size (bytes)430,084,80056,819,520
Size410.2 MB 54.2 MB
Events in quadrant A2,495,148347,458
Events in quadrant B3,794,090328,312
Events in quadrant C2,815,249344,735
Events in quadrant D3,556,570324,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109593
B0148512
C0115572
D0141262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535370.130768%
B53534869.079021%
C5353551.027461%
D53531352.521950%

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 7116 5354 0 0 0.00% 0.00%
B 7116 5354 387 387 5.44% 7.23%
C 7116 5354 47 47 0.66% 0.88%
D 7116 5354 117 117 1.64% 2.19%

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 69255 552.02 616 605 124.4
A 15 223 17381 134.9 616 605 124.4
A 13 6 13804 106.13 616 605 124.4
B 5 172 1355774 11927.34 589 573 113.6
B 0 190 50819 442.22 589 573 113.6
B 0 219 21165 181.23 589 573 113.6
C 15 214 224175 1586.56 600 605 140.9
C 0 10 181524 1283.89 600 605 140.9
C 12 250 57674 404.99 600 605 140.9
D 8 195 560374 3844.51 591 573 145.6
D 13 249 336012 2303.67 591 573 145.6
D 1 47 71141 484.64 591 573 145.6

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