ASTROSAT CZTI

Data Quality Report

Orbit 42733

Creation date: 2024-06-27T22:43:35.638170
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/AS1A05_013T01_9000005822_42733cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42733cztM0_level2_quad_clean.evt
Size (bytes)424,353,60085,020,480
Size404.7 MB 81.1 MB
Events in quadrant A2,871,618615,903
Events in quadrant B2,410,477627,647
Events in quadrant C6,315,408468,368
Events in quadrant D3,701,536494,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115812
B0107522
C0221372
D0147722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525590.171265%
B5255140.266413%
C5254125623.905596%
D52545219.916254%

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 7138 5256 6 6 0.08% 0.11%
B 7138 5256 10 10 0.14% 0.19%
C 7137 5255 1227 1227 17.19% 23.35%
D 7137 5255 515 515 7.22% 9.80%

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 555327 4567.1 594 583 121.5
A 13 248 8035 61.35 594 583 121.5
A 13 254 7639 58.09 594 583 121.5
B 5 172 31761 273.41 590 574 114.1
B 5 255 19467 165.63 590 574 114.1
B 12 111 14320 120.51 590 574 114.1
C 8 79 3759132 31656.81 507 509 118.7
C 0 239 371332 3123.24 507 509 118.7
C 15 214 194146 1630.9 507 509 118.7
D 2 249 1445690 10821.67 546 530 133.5
D 1 52 34436 253.9 546 530 133.5
D 5 70 26949 197.83 546 530 133.5

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