ASTROSAT CZTI

Data Quality Report

Orbit 35758

Creation date: 2022-07-18T21:06:23.429073
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_058T14_9000005134_35758cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35758cztM0_level2_quad_clean.evt
Size (bytes)309,847,68036,023,040
Size295.5 MB 34.4 MB
Events in quadrant A2,242,783209,454
Events in quadrant B2,383,828212,259
Events in quadrant C1,964,283205,065
Events in quadrant D2,535,484196,631

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093362
B095391
C080541
D099271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3779120.317544%
B37791483.916380%
C3779310.820323%
D37791122.963747%

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 5332 3780 4 4 0.08% 0.11%
B 5332 3780 85 85 1.59% 2.25%
C 5332 3780 28 28 0.53% 0.74%
D 5332 3780 124 124 2.33% 3.28%

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 15 223 422215 4690.09 438 430 89.9
A 10 83 90139 997.53 438 430 89.9
A 7 3 12474 133.92 438 430 89.9
B 5 172 543780 6431.47 432 421 84.5
B 4 232 37598 440.05 432 421 84.5
B 0 190 21948 254.8 432 421 84.5
C 15 214 156158 1549.98 428 430 100.5
C 0 10 128514 1274.84 428 430 100.5
C 9 187 3175 27.32 428 430 100.5
D 7 80 450396 4329.14 423 412 103.9
D 1 52 248172 2383.62 423 412 103.9
D 13 249 64316 614.8 423 412 103.9

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