ASTROSAT CZTI

Data Quality Report

Orbit 28640

Creation date: 2024-06-27T19:54:19.538093
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_045T07_9000004110_28640cztM0_level2.evt modeM0/AS1A10_045T07_9000004110_28640cztM0_level2_quad_clean.evt
Size (bytes)869,279,040139,556,160
Size829.0 MB 133.1 MB
Events in quadrant A5,246,961885,621
Events in quadrant B6,636,822877,912
Events in quadrant C5,235,817871,025
Events in quadrant D8,471,192839,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229012
B0270842
C0225642
D0328432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108801381.268382%
B108805805.330882%
C108802562.352941%
D108805314.880515%

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 11730 10883 35 35 0.30% 0.32%
B 11730 10883 273 273 2.33% 2.51%
C 11730 10883 1 1 0.01% 0.01%
D 11730 10883 346 346 2.95% 3.18%

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 15 174 158906 591.15 1315 1288 266.6
A 13 254 20019 70.25 1315 1288 266.6
A 3 137 13052 44.12 1315 1288 266.6
B 10 245 1301783 5259.4 1282 1249 247.3
B 10 246 245905 989.4 1282 1249 247.3
B 12 111 30971 120.2 1282 1249 247.3
C 14 238 238241 801.49 1259 1265 295.7
C 14 254 52652 173.8 1259 1265 295.7
C 8 128 11512 34.66 1259 1265 295.7
D 1 52 2765951 9397.41 1251 1219 294.2
D 8 195 562884 1909.12 1251 1219 294.2
D 2 250 122122 410.95 1251 1219 294.2

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