ASTROSAT CZTI

Data Quality Report

Orbit 36404

Creation date: 2022-06-25T13:12:23.553214
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_36404cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36404cztM0_level2_quad_clean.evt
Size (bytes)459,146,88051,459,840
Size437.9 MB 49.1 MB
Events in quadrant A2,952,254307,018
Events in quadrant B3,589,095308,055
Events in quadrant C3,130,549290,887
Events in quadrant D3,870,032276,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120023
B0140492
C0122732
D0149092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5359120.223922%
B53591843.433476%
C53591242.313865%
D53592725.075574%

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 7273 5360 0 0 0.00% 0.00%
B 7273 5360 115 115 1.58% 2.15%
C 7273 5360 92 92 1.26% 1.72%
D 7273 5360 241 241 3.31% 4.50%

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 190188 1388.14 677 666 136.5
A 15 223 111269 810.11 677 666 136.5
A 12 189 22239 158.01 677 666 136.5
B 5 172 523935 4179.41 658 642 125.2
B 0 189 181593 1445.21 658 642 125.2
B 0 245 99121 786.53 658 642 125.2
C 0 10 404725 2747.68 638 643 147.1
C 15 214 226448 1535.43 638 643 147.1
C 1 241 6876 42.38 638 643 147.1
D 12 6 898512 5719.12 645 629 157.0
D 2 250 139059 881.74 645 629 157.0
D 13 249 65068 410.45 645 629 157.0

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