ASTROSAT CZTI

Data Quality Report

Orbit 09504

Creation date: 2024-06-27T15:46:58.833401
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/AS1G05_230T06_9000001350_09504cztM0_level2.evt modeM0/AS1G05_230T06_9000001350_09504cztM0_level2_quad_clean.evt
Size (bytes)1,835,337,600259,061,760
Size1.7 GB 247.1 MB
Events in quadrant A16,262,6311,568,553
Events in quadrant B10,869,7611,614,240
Events in quadrant C11,719,7531,571,211
Events in quadrant D15,164,4271,492,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065165652
B048048336
C051466360
D062017573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04784
B04782
C04784
D04784

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231874321.863113%
B232531490.640778%
C232404361.876076%
D232198673.734011%

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 26287 23390 62 62 0.24% 0.27%
B 26287 23402 7 7 0.03% 0.03%
C 26287 23395 288 288 1.10% 1.23%
D 26287 23393 757 757 2.88% 3.24%

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 8 5 3904569 7176.39 2683 2628 543.7
A 1 162 887104 1626.71 2683 2628 543.7
A 1 178 401898 734.33 2683 2628 543.7
B 0 214 105311 198.0 2722 2653 518.5
B 0 187 59310 109.27 2722 2653 518.5
B 12 111 56979 104.78 2722 2653 518.5
C 4 254 1470812 2443.65 2605 2621 600.8
C 9 68 35313 54.41 2605 2621 600.8
C 13 61 19913 28.78 2605 2621 600.8
D 2 16 2949941 4518.69 2563 2497 652.3
D 1 52 1120395 1713.83 2563 2497 652.3
D 8 195 490642 748.37 2563 2497 652.3

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