ASTROSAT CZTI

Data Quality Report

Orbit 35968

Creation date: 2022-05-25T12:28:20.849217
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/AS1T05_009T09_9000005148_35968cztM0_level2.evt modeM0/AS1T05_009T09_9000005148_35968cztM0_level2_quad_clean.evt
Size (bytes)417,254,40045,797,760
Size397.9 MB 43.7 MB
Events in quadrant A1,275,642352,510
Events in quadrant B7,664,353116,681
Events in quadrant C1,866,102361,643
Events in quadrant D1,630,863345,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059901
B0248021
C075381
D069351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A292440.136799%
B29242924100.000000%
C2924852.906977%
D2924541.846785%

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 2924 2924 0 0 0.00% 0.00%
B 2923 2923 2885 2885 98.70% 98.70%
C 2924 2924 75 75 2.56% 2.56%
D 2924 2924 54 54 1.85% 1.85%

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 83809 1319.99 306 300 63.3
A 13 254 4612 68.16 306 300 63.3
A 13 6 4014 58.71 306 300 63.3
B 5 31 2650702 109734.77 116 114 24.2
B 5 15 2556308 105826.84 116 114 24.2
B 5 14 1467762 60760.86 116 114 24.2
C 9 187 458933 6452.18 298 300 71.1
C 15 214 120461 1690.46 298 300 71.1
C 0 10 101056 1417.46 298 300 71.1
D 7 223 271582 3713.9 296 286 73.0
D 8 195 76799 1047.42 296 286 73.0
D 13 249 32700 443.73 296 286 73.0

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