ASTROSAT CZTI

Data Quality Report

Orbit 39028

Creation date: 2024-06-27T21:59:33.281149
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/AS1C07_001T02_9000005426_39028cztM0_level2.fits modeM0/AS1C07_001T02_9000005426_39028cztM0_level2_quad_clean.evt
Size (bytes)254,543,04074,986,560
Size242.8 MB 71.5 MB
Events in quadrant A2,958,302479,954
Events in quadrant B1,917,093521,007
Events in quadrant C2,001,095507,628
Events in quadrant D2,221,552470,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114321
B085251
C084211
D093931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41483217.738669%
B4148160.385728%
C414840.096432%
D4148150.361620%

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 4148 4148 305 305 7.35% 7.35%
B 4148 4148 7 7 0.17% 0.17%
C 4148 4148 0 0 0.00% 0.00%
D 4148 4148 17 17 0.41% 0.41%

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 693495 7721.1 443 433 89.8
A 13 248 273134 3038.04 443 433 89.8
A 10 83 269989 3003.0 443 433 89.8
B 15 85 39874 449.1 464 452 87.8
B 5 172 21917 244.53 464 452 87.8
B 5 184 13779 151.82 464 452 87.8
C 15 214 171915 1592.9 464 468 107.6
C 1 128 6330 54.46 464 468 107.6
C 0 10 4755 39.83 464 468 107.6
D 12 227 201900 1822.41 460 450 110.5
D 12 235 150429 1356.78 460 450 110.5
D 1 47 30673 273.41 460 450 110.5

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