ASTROSAT CZTI

Data Quality Report

Orbit 34394

Creation date: 2022-02-07T11:08:35.357428
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/AS1A05_085T01_9000004910_34394cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34394cztM0_level2_quad_clean.evt
Size (bytes)632,347,20071,107,200
Size603.1 MB 67.8 MB
Events in quadrant A2,782,654496,746
Events in quadrant B3,312,331496,388
Events in quadrant C2,730,439507,437
Events in quadrant D9,983,582297,487

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114352
B0129581
C0109911
D0330541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50461943.844629%
B50463116.163298%
C5046400.792707%
D5046258951.307967%

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 7200 5047 81 81 1.12% 1.60%
B 7200 5047 251 251 3.49% 4.97%
C 7200 5047 35 35 0.49% 0.69%
D 7200 5047 2552 2552 35.44% 50.56%

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 359536 3003.84 599 591 119.5
A 7 16 64656 536.13 599 591 119.5
A 10 83 29330 240.5 599 591 119.5
B 5 172 709987 6344.11 594 582 111.8
B 5 200 82787 735.15 594 582 111.8
B 4 232 50246 444.14 594 582 111.8
C 15 214 213223 1566.61 591 596 135.7
C 0 10 136026 997.83 591 596 135.7
C 14 67 38520 279.42 591 596 135.7
D 7 223 7322937 67883.66 436 424 107.9
D 8 195 432552 4006.06 436 424 107.9
D 12 235 136145 1258.21 436 424 107.9

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