ASTROSAT CZTI

Data Quality Report

Orbit 28107

Creation date: 2024-06-27T19:48:07.122163
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_057T05_9000004060_28107cztM0_level2.evt modeM0/AS1A10_057T05_9000004060_28107cztM0_level2_quad_clean.evt
Size (bytes)1,491,157,440310,115,520
Size1.4 GB 295.7 MB
Events in quadrant A10,035,1392,049,374
Events in quadrant B10,138,9962,018,351
Events in quadrant C10,614,0621,923,761
Events in quadrant D12,926,8371,929,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438820
B0442770
C0454350
D0532050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213821270.593958%
B213821760.823122%
C213823231.510616%
D213824442.076513%

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 32160 21386 3 3 0.01% 0.01%
B 32161 21384 4 4 0.01% 0.02%
C 32161 21384 60 60 0.19% 0.28%
D 32161 21386 262 262 0.81% 1.23%

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 13 254 35489 64.12 2582 2530 514.0
A 5 98 35161 63.48 2582 2530 514.0
A 3 137 25209 44.12 2582 2530 514.0
B 0 230 84375 170.19 2544 2484 481.2
B 12 111 60364 120.29 2544 2484 481.2
B 11 111 54780 108.68 2544 2484 481.2
C 14 238 392293 682.73 2447 2468 571.0
C 3 233 316542 550.06 2447 2468 571.0
C 15 208 287220 498.71 2447 2468 571.0
D 8 195 1243565 2103.04 2474 2407 590.2
D 2 250 940436 1589.42 2474 2407 590.2
D 1 52 675239 1140.06 2474 2407 590.2

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