ASTROSAT CZTI

Data Quality Report

Orbit 15327

Creation date: 2024-06-27T17:06:56.032062
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/AS1T02_073T01_9000002260_15327cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15327cztM0_level2_quad_clean.evt
Size (bytes)508,803,840102,611,520
Size485.2 MB 97.9 MB
Events in quadrant A3,094,054687,320
Events in quadrant B3,225,988694,196
Events in quadrant C3,328,224680,148
Events in quadrant D5,353,304626,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130682
B0134131
C0135591
D0197901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6001741.233128%
B6001801.333111%
C6001651.083153%
D600189914.980837%

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 7272 6003 0 0 0.00% 0.00%
B 7272 6002 3 3 0.04% 0.05%
C 7272 6002 7 7 0.10% 0.12%
D 7272 6002 654 654 8.99% 10.90%

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 13840 81.57 802 786 160.0
A 0 226 7093 39.41 802 786 160.0
A 12 194 5894 31.92 802 786 160.0
B 4 173 91760 612.06 795 777 148.7
B 4 48 17835 114.75 795 777 148.7
B 12 111 17376 111.66 795 777 148.7
C 3 233 246517 1370.28 786 792 179.3
C 10 22 16848 89.54 786 792 179.3
C 13 61 5645 27.06 786 792 179.3
D 13 122 2289348 13014.84 731 712 175.8
D 2 33 234705 1330.65 731 712 175.8
D 10 70 47348 265.21 731 712 175.8

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