ASTROSAT CZTI

Data Quality Report

Orbit 01206

Creation date: 2024-06-27T14:09:08.337259
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/AS1G04_007T02_9000000220_01206cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01206cztM0_level2_quad_clean.evt
Size (bytes)1,144,969,920102,211,200
Size1.1 GB 97.5 MB
Events in quadrant A8,463,969674,982
Events in quadrant B8,926,318667,605
Events in quadrant C8,385,060642,971
Events in quadrant D8,445,186630,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300131
B0313970
C0297680
D0300370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6873791.149425%
B6873350.509239%
C687330.043649%
D68732423.521024%

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 6873 6873 312 312 4.54% 4.54%
B 6873 6873 404 404 5.88% 5.88%
C 6873 6873 255 255 3.71% 3.71%
D 6873 6873 552 552 8.03% 8.03%

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 12 243 226755 435.22 2137 2147 516.1
A 0 51 27972 50.04 2137 2147 516.1
A 11 79 8995 13.27 2137 2147 516.1
B 5 191 260211 488.73 2224 2232 527.9
B 15 22 91133 168.42 2224 2232 527.9
B 7 221 29393 51.46 2224 2232 527.9
C 15 241 366552 643.74 2025 2097 566.2
C 3 79 60325 102.85 2025 2097 566.2
C 3 111 41090 68.87 2025 2097 566.2
D 13 70 715358 1167.23 1967 2039 611.1
D 2 41 105079 168.61 1967 2039 611.1
D 9 66 77531 123.53 1967 2039 611.1

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