ASTROSAT CZTI

Data Quality Report

Orbit 34126

Creation date: 2024-06-27T20:56:46.252155
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/AS1A11_097T08_9000004874_34126cztM0_level2.evt modeM0/AS1A11_097T08_9000004874_34126cztM0_level2_quad_clean.evt
Size (bytes)848,675,520144,527,040
Size809.4 MB 137.8 MB
Events in quadrant A4,984,923923,388
Events in quadrant B5,848,789930,615
Events in quadrant C5,836,901917,038
Events in quadrant D8,296,005852,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220014
B0243373
C0238203
D0322993

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1088280.073516%
B10882720.661643%
C108821461.341665%
D108826095.596398%

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 15031 10885 0 0 0.00% 0.00%
B 15031 10885 29 29 0.19% 0.27%
C 15031 10885 80 80 0.53% 0.73%
D 15031 10885 620 620 4.12% 5.70%

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 6 35973 136.78 1269 1244 253.9
A 10 83 33684 127.76 1269 1244 253.9
A 13 254 19427 71.61 1269 1244 253.9
B 5 172 286948 1182.12 1263 1231 241.7
B 0 219 156258 641.41 1263 1231 241.7
B 0 182 141129 578.81 1263 1231 241.7
C 0 10 480076 1680.69 1227 1237 284.9
C 15 214 467493 1636.53 1227 1237 284.9
C 12 250 53613 183.84 1227 1237 284.9
D 7 223 1263227 3856.35 1206 1182 327.3
D 8 195 1011248 3086.39 1206 1182 327.3
D 10 118 403785 1230.21 1206 1182 327.3

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