ASTROSAT CZTI

Data Quality Report

Orbit 06686

Creation date: 2024-06-27T15:10:21.399768
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/AS1G06_145T01_9000000914_06686cztM0_level2.evt modeM0/AS1G06_145T01_9000000914_06686cztM0_level2_quad_clean.evt
Size (bytes)542,885,760101,062,080
Size517.7 MB 96.4 MB
Events in quadrant A3,096,525659,865
Events in quadrant B3,245,474679,469
Events in quadrant C2,931,857676,772
Events in quadrant D6,737,361601,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135683
B0138982
C0130582
D0244282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6351931.464336%
B6351620.976224%
C6351330.519603%
D63515057.951504%

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 7621 6352 25 25 0.33% 0.39%
B 7621 6352 11 11 0.14% 0.17%
C 7621 6352 0 0 0.00% 0.00%
D 7621 6352 343 343 4.50% 5.40%

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 14 111 136059 902.69 747 731 149.9
A 8 15 71424 471.55 747 731 149.9
A 12 194 7816 47.26 747 731 149.9
B 0 219 112309 789.02 762 745 141.4
B 4 80 36389 252.09 762 745 141.4
B 4 81 31065 214.43 762 745 141.4
C 13 61 5921 30.33 747 750 170.5
C 8 128 4652 22.88 747 750 170.5
C 12 4 4203 20.25 747 750 170.5
D 8 195 2616524 15144.07 720 701 172.7
D 2 33 666515 3854.67 720 701 172.7
D 12 221 389638 2251.72 720 701 172.7

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