ASTROSAT CZTI

Data Quality Report

Orbit 48226

Creation date: 2024-09-05T04:38:19.261043
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/AS1C09_008T01_9000006420_48226cztM0_level2.fits modeM0/AS1C09_008T01_9000006420_48226cztM0_level2_quad_clean.evt
Size (bytes)139,965,12028,460,160
Size133.5 MB 27.1 MB
Events in quadrant A1,949,517183,513
Events in quadrant B942,748196,719
Events in quadrant C821,981194,177
Events in quadrant D1,332,414163,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072021
B038781
C035391
D050781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16961247.311321%
B1696563.301887%
C1696140.825472%
D16961699.964623%

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 1696 1696 15 15 0.88% 0.88%
B 1696 1696 18 18 1.06% 1.06%
C 1696 1696 1 1 0.06% 0.06%
D 1696 1696 136 136 8.02% 8.02%

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 1151826 26350.16 201 196 43.7
A 13 248 17297 391.28 201 196 43.7
A 13 254 3182 68.32 201 196 43.7
B 5 255 88271 2122.09 200 194 41.5
B 0 200 31051 743.45 200 194 41.5
B 4 21 23238 555.21 200 194 41.5
C 0 207 17420 345.23 205 205 49.9
C 14 254 1917 34.33 205 205 49.9
C 13 61 1395 23.86 205 205 49.9
D 12 221 352123 6794.24 201 194 51.8
D 2 165 132886 2561.72 201 194 51.8
D 12 233 26883 515.25 201 194 51.8

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