ASTROSAT CZTI

Data Quality Report

Orbit 20220318_A10_123T11_9000005014_level2

Creation date: 2022-03-24T16:47:43.573525
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/AS1A10_123T11_9000005014cztM0_level2_bc.evt modeM0/AS1A10_123T11_9000005014cztM0_level2_quad_clean.evt
Size (bytes)2,139,402,240625,639,680
Size2.0 GB 596.7 MB
Events in quadrant A15,313,0893,808,116
Events in quadrant B11,509,0274,089,451
Events in quadrant C12,606,3334,102,776
Events in quadrant D22,236,0963,796,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253730
B01009800
C0994030
D01352400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09380
B09380
C09380
D09380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01750
B01750
C01750
D01750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4593642029.147510%
B459365351.164664%
C459363050.663967%
D4593613282.890979%

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 63327 45944 11 11 0.02% 0.02%
B 63327 45936 30 30 0.05% 0.07%
C 63327 45937 38 38 0.06% 0.08%
D 63327 45935 134 134 0.21% 0.29%

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 5630183 11102.01 2299 2265 506.9
A 10 83 383796 752.63 2299 2265 506.9
A 15 223 177276 345.24 2299 2265 506.9
B 5 172 1282859 2709.86 2425 2374 472.5
B 3 112 211680 442.95 2425 2374 472.5
B 4 232 167914 350.33 2425 2374 472.5
C 15 214 1798642 3293.78 2389 2370 545.4
C 0 10 618637 1130.04 2389 2370 545.4
C 15 159 611360 1116.69 2389 2370 545.4
D 8 195 9239610 16667.31 2350 2287 554.2
D 13 249 992978 1787.55 2350 2287 554.2
D 2 250 425664 763.92 2350 2287 554.2

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