ASTROSAT CZTI

Data Quality Report

Orbit 33861

Creation date: 2024-06-27T20:53:35.386558
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/AS1T04_089T01_9000004832_33861cztM0_level2.evt modeM0/AS1T04_089T01_9000004832_33861cztM0_level2_quad_clean.evt
Size (bytes)197,087,04032,713,920
Size188.0 MB 31.2 MB
Events in quadrant A1,103,331210,273
Events in quadrant B1,425,813206,015
Events in quadrant C1,256,760208,646
Events in quadrant D2,024,077198,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046891
B057451
C050741
D075601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230920.086618%
B2309773.334777%
C2309512.208748%
D2309602.598528%

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 2309 2309 0 0 0.00% 0.00%
B 2309 2309 52 52 2.25% 2.25%
C 2309 2309 35 35 1.52% 1.52%
D 2309 2309 50 50 2.17% 2.17%

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 15 169 59487 1072.25 266 262 55.2
A 13 6 8028 140.6 266 262 55.2
A 10 83 5771 99.74 266 262 55.2
B 5 172 184389 3512.33 263 256 52.4
B 0 229 108055 2056.26 263 256 52.4
B 15 222 24761 467.43 263 256 52.4
C 0 10 114026 1864.76 260 262 61.0
C 15 214 98552 1611.12 260 262 61.0
C 3 233 14727 237.1 260 262 61.0
D 8 195 631261 9097.56 257 251 69.4
D 2 249 105820 1522.04 257 251 69.4
D 7 38 77922 1119.82 257 251 69.4

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