ASTROSAT CZTI

Data Quality Report

Orbit 32395

Creation date: 2024-06-27T20:39:43.039604
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_059T01_9000004704_32395cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32395cztM0_level2_quad_clean.evt
Size (bytes)784,013,76077,561,280
Size747.7 MB 74.0 MB
Events in quadrant A3,488,590559,931
Events in quadrant B11,137,316383,671
Events in quadrant C4,290,249510,623
Events in quadrant D4,449,027500,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138632
B0369751
C0166541
D0170801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56101682.994652%
B5610377067.201426%
C56104117.326203%
D56103235.757576%

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 6945 5611 136 136 1.96% 2.42%
B 6945 5611 2988 2988 43.02% 53.25%
C 6945 5611 231 231 3.33% 4.12%
D 6945 5611 276 276 3.97% 4.92%

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 0 6 623167 4238.65 730 718 146.9
A 0 226 43659 292.41 730 718 146.9
A 13 6 12492 80.18 730 718 146.9
B 4 80 6909810 63321.61 580 567 109.1
B 6 159 1320296 12095.01 580 567 109.1
B 5 172 260394 2381.25 580 567 109.1
C 3 233 977672 6350.83 666 671 153.8
C 0 10 500676 3250.2 666 671 153.8
C 14 238 124072 802.15 666 671 153.8
D 8 195 743900 4649.19 678 662 159.9
D 12 233 514051 3211.41 678 662 159.9
D 1 47 212282 1323.75 678 662 159.9

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