ASTROSAT CZTI

Data Quality Report

Orbit 22082

Creation date: 2024-06-27T18:36:17.821698
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/AS1A07_138T08_9000003268_22082cztM0_level2.evt modeM0/AS1A07_138T08_9000003268_22082cztM0_level2_quad_clean.evt
Size (bytes)2,571,995,520469,468,800
Size2.4 GB 447.7 MB
Events in quadrant A16,329,1603,022,585
Events in quadrant B17,113,8663,067,911
Events in quadrant C18,135,2812,911,121
Events in quadrant D23,927,6032,788,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07220
B07220
C07220
D07220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0721680
B0738480
C0773310
D0953160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A353691710.483474%
B353702920.825558%
C353704221.193101%
D3536918225.151404%

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 38499 35375 1 1 0.00% 0.00%
B 38500 35376 48 48 0.12% 0.14%
C 38500 35376 45 45 0.12% 0.13%
D 38499 35375 1592 1592 4.14% 4.50%

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 13 254 57819 63.73 4216 4130 842.4
A 14 235 43292 46.49 4216 4130 842.4
A 0 226 36369 38.27 4216 4130 842.4
B 3 64 140695 173.3 4211 4107 788.2
B 0 190 136432 167.89 4211 4107 788.2
B 0 228 136289 167.71 4211 4107 788.2
C 0 239 1346721 1430.28 4046 4061 938.7
C 14 238 637390 674.66 4046 4061 938.7
C 9 54 340980 358.9 4046 4061 938.7
D 1 52 6171657 6393.44 4016 3909 964.7
D 13 172 607537 625.72 4016 3909 964.7
D 7 238 488006 501.81 4016 3909 964.7

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