ASTROSAT CZTI

Data Quality Report

Orbit 11884

Creation date: 2024-06-27T16:19:34.487951
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/AS1T01_209T01_9000001758_11884cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11884cztM0_level2_quad_clean.evt
Size (bytes)868,415,040191,520,000
Size828.2 MB 182.6 MB
Events in quadrant A6,097,7721,260,388
Events in quadrant B7,798,6381,279,165
Events in quadrant C5,254,8311,274,142
Events in quadrant D6,378,4641,199,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254664
B0305643
C0231463
D0262193

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11380880.773286%
B113807246.362039%
C11380220.193322%
D11380800.702988%

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 14056 11383 13 13 0.09% 0.11%
B 14056 11383 466 466 3.32% 4.09%
C 14056 11383 1 1 0.01% 0.01%
D 14056 11383 58 58 0.41% 0.51%

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 8 15 318670 1171.79 1359 1336 270.8
A 1 162 185807 681.18 1359 1336 270.8
A 1 178 95143 346.39 1359 1336 270.8
B 4 239 1312027 5298.46 1349 1319 247.4
B 3 64 794079 3204.68 1349 1319 247.4
B 15 204 194979 782.86 1349 1319 247.4
C 13 61 10271 29.22 1343 1348 305.4
C 1 16 8383 23.03 1343 1348 305.4
C 12 4 4835 11.42 1343 1348 305.4
D 8 195 687048 2195.19 1319 1286 312.4
D 13 104 152860 485.2 1319 1286 312.4
D 13 249 99280 313.69 1319 1286 312.4

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