ASTROSAT CZTI

Data Quality Report

Orbit 13930

Creation date: 2024-06-27T16:48:05.899570
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/AS1T02_041T01_9000002058_13930cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13930cztM0_level2_quad_clean.evt
Size (bytes)189,904,32045,020,160
Size181.1 MB 42.9 MB
Events in quadrant A1,193,424286,583
Events in quadrant B1,250,806292,748
Events in quadrant C1,255,275307,432
Events in quadrant D1,872,623289,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053382
B054071
C053581
D073811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2604532.035330%
B2604562.150538%
C2604250.960061%
D2604612.342550%

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 3020 2605 0 0 0.00% 0.00%
B 3020 2605 1 1 0.03% 0.04%
C 3020 2605 0 0 0.00% 0.00%
D 3020 2605 18 18 0.60% 0.69%

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 1 162 6136 89.84 307 301 64.9
A 4 2 4678 67.39 307 301 64.9
A 0 226 2739 37.54 307 301 64.9
B 4 80 14358 223.17 311 302 63.0
B 0 214 9873 151.96 311 302 63.0
B 12 111 7448 113.46 311 302 63.0
C 3 233 56949 785.04 305 306 72.2
C 8 128 4055 51.96 305 306 72.2
C 13 61 2216 26.47 305 306 72.2
D 1 52 538945 7501.85 297 290 71.8
D 12 110 98721 1370.85 297 290 71.8
D 5 53 32550 449.29 297 290 71.8

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