ASTROSAT CZTI

Data Quality Report

Orbit 37541

Creation date: 2024-06-27T21:41:18.494316
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_051T01_9000005334_37541cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37541cztM0_level2_quad_clean.evt
Size (bytes)157,104,00023,158,080
Size149.8 MB 22.1 MB
Events in quadrant A1,104,202141,026
Events in quadrant B934,004146,387
Events in quadrant C1,048,284145,959
Events in quadrant D1,542,676131,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043952
B038711
C041501
D058231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1862100.537057%
B186250.268528%
C186270.375940%
D18621498.002148%

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 3176 1863 5 5 0.16% 0.27%
B 3176 1863 1 1 0.03% 0.05%
C 3176 1863 6 6 0.19% 0.32%
D 3176 1863 126 126 3.97% 6.76%

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 122502 2646.86 222 217 46.2
A 15 222 80946 1747.38 222 217 46.2
A 6 10 14020 298.77 222 217 46.2
B 5 172 20836 460.66 223 217 44.8
B 4 80 10520 230.19 223 217 44.8
B 4 81 6113 131.73 223 217 44.8
C 14 254 89412 1674.26 220 221 53.3
C 15 214 81200 1520.1 220 221 53.3
C 0 10 15823 292.87 220 221 53.3
D 2 249 462465 8568.89 213 207 53.9
D 13 249 76902 1421.7 213 207 53.9
D 12 233 34123 628.7 213 207 53.9

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