ASTROSAT CZTI

Data Quality Report

Orbit 33476

Creation date: 2024-06-27T20:49:14.748176
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/AS1A11_060T01_9000004804_33476cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33476cztM0_level2_quad_clean.evt
Size (bytes)268,784,64027,385,920
Size256.3 MB 26.1 MB
Events in quadrant A1,475,861159,722
Events in quadrant B2,284,290146,624
Events in quadrant C1,784,174152,721
Events in quadrant D2,383,578148,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062972
B087121
C071471
D091811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A310740.128742%
B31072126.823302%
C3107341.094303%
D3107662.124236%

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 4748 3108 0 0 0.00% 0.00%
B 4748 3108 171 171 3.60% 5.50%
C 4748 3108 30 30 0.63% 0.97%
D 4748 3108 50 50 1.05% 1.61%

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 13 254 5814 69.94 380 372 77.8
A 3 137 3656 42.2 380 372 77.8
A 0 226 3204 36.39 380 372 77.8
B 5 172 516851 7177.78 368 359 72.0
B 0 213 133753 1853.8 368 359 72.0
B 5 255 123682 1713.84 368 359 72.0
C 15 214 133161 1515.75 371 374 87.6
C 0 10 86253 980.3 371 374 87.6
C 1 23 45603 516.28 371 374 87.6
D 8 195 605617 6673.88 367 356 90.7
D 2 250 224210 2468.31 367 356 90.7
D 13 249 91303 1002.82 367 356 90.7

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