ASTROSAT CZTI

Data Quality Report

Orbit 36410

Creation date: 2022-06-23T13:54:28.264349
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/AS1T04_084T01_9000005198_36410cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36410cztM0_level2_quad_clean.evt
Size (bytes)494,297,28085,095,360
Size471.4 MB 81.2 MB
Events in quadrant A2,917,754554,015
Events in quadrant B4,193,408551,874
Events in quadrant C3,144,863544,250
Events in quadrant D4,303,364504,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125193
B0165172
C0129192
D0168382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A605180.132210%
B60513035.007437%
C6051520.859362%
D60513545.850273%

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 9155 6053 0 0 0.00% 0.00%
B 9155 6053 157 157 1.71% 2.59%
C 9155 6053 36 36 0.39% 0.59%
D 9155 6053 317 317 3.46% 5.24%

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 10 83 194325 1372.99 699 685 141.0
A 13 254 12266 82.11 699 685 141.0
A 3 137 7392 47.56 699 685 141.0
B 5 172 608544 4592.21 683 664 132.4
B 5 255 409381 3087.64 683 664 132.4
B 0 189 310841 2343.22 683 664 132.4
C 15 214 260828 1631.65 681 687 159.4
C 0 10 212212 1326.72 681 687 159.4
C 6 252 10151 59.36 681 687 159.4
D 12 6 752206 4574.06 669 650 164.3
D 2 249 295346 1793.55 669 650 164.3
D 13 249 236594 1435.98 669 650 164.3

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