ASTROSAT CZTI

Data Quality Report

Orbit 45631

Creation date: 2024-06-27T23:14:23.220029
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/AS1A13_071T08_9000006114_45631cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45631cztM0_level2_quad_clean.evt
Size (bytes)1,759,276,800352,388,160
Size1.6 GB 336.1 MB
Events in quadrant A18,750,7442,374,088
Events in quadrant B13,403,1262,361,944
Events in quadrant C11,010,8322,319,706
Events in quadrant D20,222,6672,064,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710684
B0555824
C0493254
D0758154

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580
B04580
C04580
D04580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224953691.640365%
B2249612085.369844%
C224964281.902560%
D2249612795.685455%

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 24235 22499 22 22 0.09% 0.10%
B 24236 22500 750 750 3.09% 3.33%
C 24236 22500 255 255 1.05% 1.13%
D 24236 22500 965 965 3.98% 4.29%

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 8911739 17575.74 2469 2413 506.9
A 14 235 95403 183.44 2469 2413 506.9
A 10 255 63785 121.07 2469 2413 506.9
B 5 172 1784923 3749.58 2415 2334 475.4
B 3 112 808447 1695.62 2415 2334 475.4
B 12 18 633356 1327.32 2415 2334 475.4
C 14 254 1267413 2218.87 2425 2438 570.1
C 12 2 166079 287.04 2425 2438 570.1
C 2 14 101444 173.66 2425 2438 570.1
D 11 241 7054552 11769.11 2394 2320 599.2
D 2 249 1290008 2148.96 2394 2320 599.2
D 13 249 942591 1569.17 2394 2320 599.2

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