ASTROSAT CZTI

Data Quality Report

Orbit 38819

Creation date: 2024-06-27T21:56:50.012510
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/AS1A12_061T07_9000005402_38819cztM0_level2.fits modeM0/AS1A12_061T07_9000005402_38819cztM0_level2_quad_clean.evt
Size (bytes)371,381,760102,597,120
Size354.2 MB 97.8 MB
Events in quadrant A3,457,226680,667
Events in quadrant B2,820,258700,715
Events in quadrant C3,066,785672,897
Events in quadrant D3,915,968615,586

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141783
B0126532
C0130202
D0158542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6259470.750919%
B6259150.239655%
C6259440.702988%
D6259951.517814%

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 7601 6260 25 25 0.33% 0.40%
B 7601 6260 1 1 0.01% 0.02%
C 7601 6260 34 34 0.45% 0.54%
D 7601 6260 69 69 0.91% 1.10%

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 10 83 434859 3103.38 691 677 139.9
A 13 248 216767 1544.54 691 677 139.9
A 12 16 79651 564.48 691 677 139.9
B 0 230 36755 266.87 691 670 135.2
B 5 172 35342 256.42 691 670 135.2
B 12 111 17473 124.27 691 670 135.2
C 15 214 279097 1755.96 678 680 158.6
C 10 20 131962 827.99 678 680 158.6
C 0 10 6088 34.11 678 680 158.6
D 2 16 679416 4087.88 673 654 166.0
D 10 118 231274 1388.92 673 654 166.0
D 12 235 171294 1027.69 673 654 166.0

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