ASTROSAT CZTI

Data Quality Report

Orbit 10749

Creation date: 2024-06-27T16:03:20.960953
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/AS1A03_064T01_9000001548_10749cztM0_level2.evt modeM0/AS1A03_064T01_9000001548_10749cztM0_level2_quad_clean.evt
Size (bytes)238,556,16039,237,120
Size227.5 MB 37.4 MB
Events in quadrant A1,587,091243,694
Events in quadrant B2,171,527242,861
Events in quadrant C1,496,815245,064
Events in quadrant D1,754,673233,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066994
B085601
C064511
D072261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3125702.240000%
B31261875.982086%
C3126481.535509%
D3126762.431222%

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 4061 3126 2 2 0.05% 0.06%
B 4061 3126 64 64 1.58% 2.05%
C 4061 3127 0 0 0.00% 0.00%
D 4061 3127 27 27 0.66% 0.86%

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 30314 368.67 392 384 81.2
A 13 251 11048 131.36 392 384 81.2
A 8 15 10414 123.55 392 384 81.2
B 4 239 346419 4537.39 388 379 76.3
B 0 85 151880 1986.53 388 379 76.3
B 0 214 75990 991.44 388 379 76.3
C 8 128 4370 44.19 381 384 90.2
C 13 61 2884 27.71 381 384 90.2
C 8 112 2357 21.87 381 384 90.2
D 10 172 60769 650.17 379 368 92.9
D 12 233 57844 618.69 379 368 92.9
D 10 157 55155 589.74 379 368 92.9

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