ASTROSAT CZTI

Data Quality Report

Orbit 28707

Creation date: 2024-06-27T19:55:12.954944
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/AS1A10_021T08_9000004118_28707cztM0_level2.evt modeM0/AS1A10_021T08_9000004118_28707cztM0_level2_quad_clean.evt
Size (bytes)268,770,24024,618,240
Size256.3 MB 23.5 MB
Events in quadrant A1,668,780132,639
Events in quadrant B1,701,853134,527
Events in quadrant C1,644,115129,556
Events in quadrant D2,905,157119,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069101
B069991
C067411
D0108621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3215381.181960%
B3215581.804044%
C3215551.710731%
D32152878.926905%

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 3215 3215 8 8 0.25% 0.25%
B 3215 3215 16 16 0.50% 0.50%
C 3215 3215 0 0 0.00% 0.00%
D 3215 3215 259 259 8.06% 8.06%

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 14 254 72114 856.46 410 402 83.7
A 13 254 5786 64.3 410 402 83.7
A 13 6 4546 49.49 410 402 83.7
B 4 80 99256 1261.97 404 395 78.3
B 0 190 11991 148.02 404 395 78.3
B 12 111 9402 114.98 404 395 78.3
C 14 238 67451 714.61 394 397 93.8
C 10 22 16323 169.73 394 397 93.8
C 3 233 15082 156.5 394 397 93.8
D 1 52 1018972 10926.55 384 374 93.2
D 8 195 221914 2376.47 384 374 93.2
D 12 233 84334 900.64 384 374 93.2

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