ASTROSAT CZTI

Data Quality Report

Orbit 15359

Creation date: 2024-06-27T17:07:24.814710
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/AS1A04_126T01_9000002262_15359cztM0_level2.evt modeM0/AS1A04_126T01_9000002262_15359cztM0_level2_quad_clean.evt
Size (bytes)453,528,00094,052,160
Size432.5 MB 89.7 MB
Events in quadrant A3,037,854611,631
Events in quadrant B3,948,474602,343
Events in quadrant C3,161,472606,023
Events in quadrant D3,148,640577,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134123
B0159112
C0136082
D0139412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6452480.743955%
B64522423.750775%
C6452280.433974%
D6452721.115933%

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 7538 6454 1 1 0.01% 0.02%
B 7538 6454 135 135 1.79% 2.09%
C 7538 6454 3 3 0.04% 0.05%
D 7538 6454 26 26 0.34% 0.40%

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 15 239 12336 73.14 784 768 158.2
A 9 143 11930 70.57 784 768 158.2
A 0 226 7105 40.07 784 768 158.2
B 10 16 718757 4903.87 774 755 146.4
B 0 190 51894 349.27 774 755 146.4
B 0 189 35215 235.36 774 755 146.4
C 3 233 220351 1265.74 754 759 173.5
C 13 61 5438 26.97 754 759 173.5
C 7 247 2149 8.01 754 759 173.5
D 2 33 88797 487.05 750 728 180.8
D 7 38 50129 273.2 750 728 180.8
D 10 70 44686 243.1 750 728 180.8

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