ASTROSAT CZTI

Data Quality Report

Orbit 23754

Creation date: 2024-06-27T18:58:19.902880
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/AS1C05_007T01_9000003518_23754cztM0_level2.evt modeM0/AS1C05_007T01_9000003518_23754cztM0_level2_quad_clean.evt
Size (bytes)298,958,40053,956,800
Size285.1 MB 51.5 MB
Events in quadrant A1,960,560338,372
Events in quadrant B2,028,905353,895
Events in quadrant C2,036,806341,521
Events in quadrant D2,759,667322,423

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082881
B084081
C083731
D0109181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3930481.221374%
B3930792.010178%
C3930792.010178%
D3930992.519084%

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 5220 3931 0 0 0.00% 0.00%
B 5220 3930 0 0 0.00% 0.00%
C 5220 3931 1 1 0.02% 0.03%
D 5220 3931 53 53 1.02% 1.35%

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 6531 57.81 508 497 104.4
A 0 226 4441 37.78 508 497 104.4
A 3 137 4297 36.4 508 497 104.4
B 12 111 11450 111.76 512 499 98.0
B 11 111 10358 100.62 512 499 98.0
B 0 189 9941 96.36 512 499 98.0
C 14 238 78254 662.6 499 501 117.3
C 7 247 10113 81.91 499 501 117.3
C 13 61 3361 24.37 499 501 117.3
D 1 52 606674 4961.18 498 483 122.2
D 8 195 240178 1961.71 498 483 122.2
D 2 234 15712 124.64 498 483 122.2

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