ASTROSAT CZTI

Data Quality Report

Orbit 02134

Creation date: 2024-06-27T14:14:25.681585
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/AS1T01_072T02_9000000336_02134cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02134cztM0_level2_quad_clean.evt
Size (bytes)158,546,88017,141,760
Size151.2 MB 16.3 MB
Events in quadrant A1,045,83587,399
Events in quadrant B1,084,00190,414
Events in quadrant C1,081,10689,567
Events in quadrant D1,425,01378,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049221
B049351
C049821
D0617419

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2398712.960801%
B2398552.293578%
C2398361.501251%
D23961837.637730%

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 2793 2399 0 0 0.00% 0.00%
B 2793 2399 0 0 0.00% 0.00%
C 2793 2399 0 0 0.00% 0.00%
D 2793 2398 157 157 5.62% 6.55%

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 13 9 937 11.92 272 266 56.3
A 15 171 683 7.41 272 266 56.3
A 0 1 674 7.25 272 266 56.3
B 0 198 8442 150.52 281 274 54.3
B 5 189 2801 46.57 281 274 54.3
B 0 234 1645 25.27 281 274 54.3
C 10 82 9051 143.91 268 269 61.0
C 9 191 6181 96.88 268 269 61.0
C 9 236 5157 80.1 268 269 61.0
D 2 31 309748 5192.19 253 247 59.6
D 10 215 141656 2372.28 253 247 59.6
D 2 14 6781 109.61 253 247 59.6

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