ASTROSAT CZTI

Data Quality Report

Orbit 00702

Creation date: 2024-06-27T14:01:47.243523
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_141T01_9000000100_00702cztM0_level2.evt modeM0/AS1P01_141T01_9000000100_00702cztM0_level2_quad_clean.evt
Size (bytes)692,628,48036,440,640
Size660.5 MB 34.8 MB
Events in quadrant A5,082,116207,111
Events in quadrant B5,017,544210,444
Events in quadrant C5,505,286206,002
Events in quadrant D5,105,620197,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179351
B0177361
C0191851
D0180131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A399980.200050%
B399930.075019%
C399940.100025%
D399970.175044%

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 3999 3999 216 216 5.40% 5.40%
B 3999 3999 152 152 3.80% 3.80%
C 3999 3999 173 173 4.33% 4.33%
D 3999 3999 111 111 2.78% 2.78%

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 10 216 431758 1459.9 1209 1219 294.9
A 13 8 4749 11.97 1209 1219 294.9
A 15 171 4258 10.3 1209 1219 294.9
B 7 221 89226 295.17 1264 1272 298.0
B 5 247 53355 174.79 1264 1272 298.0
B 0 220 27596 88.34 1264 1272 298.0
C 3 31 211307 642.25 1167 1213 327.1
C 3 95 210463 639.67 1167 1213 327.1
C 3 15 163944 497.46 1167 1213 327.1
D 0 25 769745 2234.51 1111 1149 344.0
D 9 52 64942 185.46 1111 1149 344.0
D 1 4 46514 131.89 1111 1149 344.0

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