ASTROSAT CZTI

Data Quality Report

Orbit 20200208_T03_178T01_9000003488_level2

Creation date: 2021-09-01T12:43:22.679187
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/AS1T03_178T01_9000003488cztM0_level2_bc.evt modeM0/AS1T03_178T01_9000003488cztM0_level2_quad_clean.evt
Size (bytes)4,870,987,2001,197,198,720
Size4.5 GB 1.1 GB
Events in quadrant A20,800,8667,705,521
Events in quadrant B39,936,9207,378,152
Events in quadrant C21,712,0467,585,086
Events in quadrant D58,298,6856,770,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02055730
B02879280
C02116240
D03255200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02010
C02010
D02010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020320
B020320
C020320
D020320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9944310351.040797%
B994441130411.367202%
C9944418461.856321%
D994431392314.000985%

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 131685 99438 0 0 0.00% 0.00%
B 131685 99377 1113 1113 0.85% 1.12%
C 131685 99430 8 8 0.01% 0.01%
D 131684 99434 8979 8979 6.82% 9.03%

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 141704 118.16 5394 5289 1154.5
A 0 226 33776 24.68 5394 5289 1154.5
A 12 194 33104 24.09 5394 5289 1154.5
B 3 64 18610832 19032.83 5247 5121 977.6
B 0 229 539899 547.05 5247 5121 977.6
B 0 189 378289 381.73 5247 5121 977.6
C 10 9 702797 561.54 5319 5300 1242.1
C 0 10 251010 197.82 5319 5300 1242.1
C 7 247 198573 155.6 5319 5300 1242.1
D 1 52 38333790 33742.47 4994 4824 1135.9
D 2 234 360437 313.06 4994 4824 1135.9
D 12 233 286148 247.66 4994 4824 1135.9

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