ASTROSAT CZTI

Data Quality Report

Orbit 34888

Creation date: 2022-07-18T19:51:29.421481
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/AS1T04_077T01_9000004994_34888cztM0_level2.evt modeM0/AS1T04_077T01_9000004994_34888cztM0_level2_quad_clean.evt
Size (bytes)475,649,28057,432,960
Size453.6 MB 54.8 MB
Events in quadrant A2,458,116355,622
Events in quadrant B2,967,964361,525
Events in quadrant C3,049,659347,143
Events in quadrant D5,578,183311,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105773
B0120962
C0121342
D0201062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518130.057904%
B5181561.080872%
C5181931.795020%
D51814598.859294%

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 9277 5183 0 0 0.00% 0.00%
B 9277 5183 30 30 0.32% 0.58%
C 9277 5183 83 83 0.89% 1.60%
D 9277 5183 534 534 5.76% 10.30%

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 56768 452.51 616 605 124.1
A 13 6 18114 141.07 616 605 124.1
A 13 254 8118 60.53 616 605 124.1
B 0 190 210877 1788.56 612 596 117.6
B 5 172 178962 1517.1 612 596 117.6
B 0 219 43094 361.47 612 596 117.6
C 0 207 250877 1824.25 591 596 137.2
C 0 10 235131 1709.48 591 596 137.2
C 15 214 234494 1704.83 591 596 137.2
D 1 52 1227634 8882.27 573 559 138.1
D 8 195 942438 6817.86 573 559 138.1
D 7 223 382352 2763.64 573 559 138.1

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