ASTROSAT CZTI

Data Quality Report

Orbit 35140

Creation date: 2022-03-29T12:22:57.917452
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_9000005028_35140cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35140cztM0_level2_quad_clean.evt
Size (bytes)1,313,164,800156,746,880
Size1.2 GB 149.5 MB
Events in quadrant A7,285,476979,601
Events in quadrant B9,163,999958,063
Events in quadrant C7,862,679968,755
Events in quadrant D14,491,021849,972

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304633
B0365153
C0317473
D0529013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14339610.425413%
B143397074.930609%
C143391380.962410%
D14339156010.879420%

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 18400 14342 28 28 0.15% 0.20%
B 18400 14342 433 433 2.35% 3.02%
C 18400 14342 100 100 0.54% 0.70%
D 18400 14342 1248 1248 6.78% 8.70%

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 553460 1631.61 1685 1651 338.2
A 10 83 173395 507.82 1685 1651 338.2
A 13 6 38814 109.89 1685 1651 338.2
B 5 172 1599492 5023.82 1643 1602 318.1
B 5 236 751005 2356.15 1643 1602 318.1
B 10 245 92472 285.7 1643 1602 318.1
C 15 214 594821 1571.25 1631 1643 377.5
C 0 10 480251 1267.77 1631 1643 377.5
C 14 67 233950 615.35 1631 1643 377.5
D 8 195 3216047 8354.32 1574 1532 384.8
D 5 223 1654830 4296.82 1574 1532 384.8
D 7 80 833150 2161.32 1574 1532 384.8

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