ASTROSAT CZTI

Data Quality Report

Orbit 36617

Creation date: 2024-06-27T21:29:14.033399
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/AS1A10_073T02_9000005226_36617cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36617cztM0_level2_quad_clean.evt
Size (bytes)953,467,200125,516,160
Size909.3 MB 119.7 MB
Events in quadrant A5,370,022793,294
Events in quadrant B6,316,520783,409
Events in quadrant C6,057,117772,606
Events in quadrant D10,403,218703,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228794
B0256093
C0247623
D0383843

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10802300.277726%
B108022662.462507%
C108021641.518237%
D108028738.081837%

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 15043 10805 7 7 0.05% 0.06%
B 15043 10805 173 173 1.15% 1.60%
C 15043 10805 127 127 0.84% 1.18%
D 15043 10805 739 739 4.91% 6.84%

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 363134 1449.02 1242 1219 249.8
A 15 223 164179 652.45 1242 1219 249.8
A 13 6 26669 101.9 1242 1219 249.8
B 5 200 853280 3604.25 1228 1196 236.4
B 5 255 235162 989.66 1228 1196 236.4
B 0 219 89438 373.26 1228 1196 236.4
C 0 10 713343 2548.72 1201 1209 279.4
C 15 214 454643 1622.83 1201 1209 279.4
C 14 254 90143 318.29 1201 1209 279.4
D 12 235 4662111 16217.28 1172 1139 287.4
D 13 171 205127 709.75 1172 1139 287.4
D 13 249 197556 683.41 1172 1139 287.4

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