ASTROSAT CZTI

Data Quality Report

Orbit 28918

Creation date: 2024-06-27T19:57:56.702820
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_048T07_9000004148_28918cztM0_level2.evt modeM0/AS1A10_048T07_9000004148_28918cztM0_level2_quad_clean.evt
Size (bytes)349,047,36063,892,800
Size332.9 MB 60.9 MB
Events in quadrant A2,059,471414,514
Events in quadrant B2,108,874429,926
Events in quadrant C2,731,037405,646
Events in quadrant D3,386,979390,107

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088162
B089711
C0109451
D0129521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4185190.454002%
B4185310.740741%
C41851513.608124%
D4185852.031063%

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 5330 4186 0 0 0.00% 0.00%
B 5330 4186 1 1 0.02% 0.02%
C 5330 4186 1 1 0.02% 0.02%
D 5330 4186 56 56 1.05% 1.34%

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 7444 64.58 533 521 107.2
A 3 137 5092 42.64 533 521 107.2
A 0 226 4589 37.95 533 521 107.2
B 10 245 15781 148.93 532 517 102.5
B 12 111 12452 116.45 532 517 102.5
B 11 111 11452 106.69 532 517 102.5
C 3 233 605647 5037.17 510 513 120.1
C 14 238 87080 720.59 510 513 120.1
C 15 208 30035 245.74 510 513 120.1
D 8 195 1234829 10051.45 512 499 122.8
D 1 52 170190 1381.84 512 499 122.8
D 12 233 20369 161.81 512 499 122.8

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