ASTROSAT CZTI

Data Quality Report

Orbit 35129

Creation date: 2022-03-28T17:05:48.759912
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/AS1A11_047T09_9000005028_35129cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35129cztM0_level2_quad_clean.evt
Size (bytes)620,890,56074,615,040
Size592.1 MB 71.2 MB
Events in quadrant A6,289,703440,313
Events in quadrant B3,365,026506,466
Events in quadrant C3,173,850492,419
Events in quadrant D5,618,672450,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221913
B0134302
C0125902
D0205102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5275160130.350711%
B52751051.990521%
C52751072.028436%
D52753737.071090%

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 7098 5276 1274 1274 17.95% 24.15%
B 7098 5276 45 45 0.63% 0.85%
C 7098 5276 62 62 0.87% 1.18%
D 7098 5276 328 328 4.62% 6.22%

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 3997582 35184.72 567 557 113.6
A 10 83 73035 638.0 567 557 113.6
A 12 16 12091 101.53 567 557 113.6
B 5 172 458301 3597.89 663 647 127.2
B 0 190 101323 791.47 663 647 127.2
B 0 182 68967 537.1 663 647 127.2
C 0 10 306212 2075.59 639 645 147.2
C 15 214 226520 1534.28 639 645 147.2
C 0 207 89688 604.83 639 645 147.2
D 8 195 1645800 10716.52 632 615 153.5
D 13 249 382034 2484.51 632 615 153.5
D 7 223 325335 2115.18 632 615 153.5

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