ASTROSAT CZTI

Data Quality Report

Orbit 36610

Creation date: 2024-06-27T21:29:08.290605
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/AS1A10_073T02_9000005226_36610cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36610cztM0_level2_quad_clean.evt
Size (bytes)521,346,24069,465,600
Size497.2 MB 66.2 MB
Events in quadrant A2,923,654454,366
Events in quadrant B2,545,417462,296
Events in quadrant C3,436,026453,239
Events in quadrant D6,549,409386,583

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116203
B0102692
C0131432
D0228312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943480.971070%
B494390.182076%
C49432855.765729%
D494392618.733563%

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 7066 4944 21 21 0.30% 0.42%
B 7066 4944 1 1 0.01% 0.02%
C 7066 4944 217 217 3.07% 4.39%
D 7066 4944 850 850 12.03% 17.19%

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 15 223 326466 2605.86 620 609 125.0
A 10 83 194645 1551.7 620 609 125.0
A 13 254 8055 59.55 620 609 125.0
B 0 189 23510 196.29 614 599 116.7
B 5 255 22091 184.13 614 599 116.7
B 0 219 18286 151.53 614 599 116.7
C 0 10 533412 4029.79 582 587 132.2
C 0 207 378185 2855.8 582 587 132.2
C 15 214 208793 1574.68 582 587 132.2
D 12 235 3690015 26752.01 570 555 137.9
D 2 249 140873 1017.44 570 555 137.9
D 12 17 97339 701.77 570 555 137.9

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