ASTROSAT CZTI

Data Quality Report

Orbit 00395

Creation date: 2024-06-27T13:59:19.650878
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/AS1P01_161T02_9000000066_00395cztM0_level2.evt modeM0/AS1P01_161T02_9000000066_00395cztM0_level2_quad_clean.evt
Size (bytes)774,351,36054,239,040
Size738.5 MB 51.7 MB
Events in quadrant A6,124,124327,032
Events in quadrant B5,922,262308,799
Events in quadrant C5,643,759328,019
Events in quadrant D5,412,234311,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219123
B0212572
C0205162
D0198722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5234110.210164%
B523460.114635%
C523420.038212%
D5234120.229270%

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 7299 5235 110 110 1.51% 2.10%
B 7299 5235 56 56 0.77% 1.07%
C 7299 5235 31 31 0.42% 0.59%
D 7299 5235 58 58 0.79% 1.11%

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 0 238 117469 341.97 1509 1488 339.2
A 12 243 62624 180.26 1509 1488 339.2
A 13 17 42088 119.71 1509 1488 339.2
B 4 82 25492 67.86 1513 1516 353.3
B 5 46 20512 53.76 1513 1516 353.3
B 5 2 17615 45.57 1513 1516 353.3
C 5 234 67950 169.94 1405 1455 391.3
C 1 1 47630 118.01 1405 1455 391.3
C 14 239 6110 11.9 1405 1455 391.3
D 13 7 46179 106.1 1338 1382 422.2
D 1 5 43630 100.06 1338 1382 422.2
D 13 174 28844 65.04 1338 1382 422.2

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