ASTROSAT CZTI

Data Quality Report

Orbit 15300

Creation date: 2024-06-27T17:06:26.561234
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_223T01_9000002258_15300cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15300cztM0_level2_quad_clean.evt
Size (bytes)478,846,08095,359,680
Size456.7 MB 90.9 MB
Events in quadrant A3,235,106626,954
Events in quadrant B3,612,729631,176
Events in quadrant C3,606,134610,185
Events in quadrant D3,616,686576,287

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136143
B0148062
C0146462
D0149742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6348761.197227%
B63481081.701323%
C6348771.212980%
D63481752.756774%

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 7669 6350 3 3 0.04% 0.05%
B 7669 6350 27 27 0.35% 0.43%
C 7669 6350 13 13 0.17% 0.20%
D 7669 6350 119 119 1.55% 1.87%

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 9 143 62068 368.98 824 806 166.0
A 0 226 7482 40.21 824 806 166.0
A 12 194 6283 32.99 824 806 166.0
B 10 16 224935 1450.18 818 801 154.6
B 0 190 43618 277.03 818 801 154.6
B 0 219 33069 208.78 818 801 154.6
C 3 233 408798 2244.46 787 794 181.8
C 4 254 107426 586.59 787 794 181.8
C 7 247 21450 113.63 787 794 181.8
D 13 122 264116 1356.25 786 763 194.2
D 7 38 122404 626.44 786 763 194.2
D 10 70 87905 448.78 786 763 194.2

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