ASTROSAT CZTI

Data Quality Report

Orbit 00398

Creation date: 2024-06-27T13:59:21.488576
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_00398cztM0_level2.evt modeM0/AS1P01_161T02_9000000066_00398cztM0_level2_quad_clean.evt
Size (bytes)818,864,64051,410,880
Size780.9 MB 49.0 MB
Events in quadrant A6,607,755299,864
Events in quadrant B6,228,315289,626
Events in quadrant C6,147,908303,814
Events in quadrant D5,458,465287,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234313
B0223412
C0220422
D0200242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535980.149282%
B535950.093301%
C535940.074641%
D5359140.261243%

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 7425 5360 267 267 3.60% 4.98%
B 7425 5360 75 75 1.01% 1.40%
C 7425 5360 87 87 1.17% 1.62%
D 7425 5360 45 45 0.61% 0.84%

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 69 250285 696.38 1569 1548 357.2
A 0 238 147688 409.14 1569 1548 357.2
A 13 17 65857 180.04 1569 1548 357.2
B 15 82 33373 84.68 1587 1599 375.2
B 0 220 31702 80.22 1587 1599 375.2
B 0 182 19251 47.04 1587 1599 375.2
C 1 1 278826 697.12 1420 1470 397.9
C 3 9 257547 643.63 1420 1470 397.9
C 2 53 23682 55.83 1420 1470 397.9
D 2 154 72795 170.01 1340 1390 420.0
D 13 155 41893 96.43 1340 1390 420.0
D 1 4 39470 90.66 1340 1390 420.0

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