ASTROSAT CZTI

Data Quality Report

Orbit 37437

Creation date: 2024-06-27T21:39:59.215314
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/AS1A09_002T01_9000005322_37437cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37437cztM0_level2_quad_clean.evt
Size (bytes)430,286,40094,403,520
Size410.4 MB 90.0 MB
Events in quadrant A2,699,477624,157
Events in quadrant B3,976,886614,309
Events in quadrant C2,860,311641,480
Events in quadrant D3,131,997605,266

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112363
B0153452
C0116762
D0128852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5332130.243811%
B53323236.057764%
C5332440.825206%
D5332561.050263%

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 7094 5333 4 4 0.06% 0.08%
B 7094 5333 252 252 3.55% 4.73%
C 7094 5333 36 36 0.51% 0.68%
D 7094 5333 52 52 0.73% 0.98%

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 10 83 274968 2258.09 604 593 121.5
A 12 189 32200 260.12 604 593 121.5
A 13 6 25353 203.77 604 593 121.5
B 15 35 650645 5797.51 586 568 112.1
B 4 171 474604 4227.54 586 568 112.1
B 0 189 361549 3219.3 586 568 112.1
C 15 214 243977 1784.72 592 598 136.4
C 0 10 140919 1028.99 592 598 136.4
C 14 254 134349 980.81 592 598 136.4
D 12 227 382437 2672.8 592 577 142.9
D 2 249 181761 1268.18 592 577 142.9
D 13 249 45521 314.58 592 577 142.9

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