ASTROSAT CZTI

Data Quality Report

Orbit 26903

Creation date: 2024-06-27T19:34:23.883601
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/AS1T03_232T01_9000003886_26903cztM0_level2.evt modeM0/AS1T03_232T01_9000003886_26903cztM0_level2_quad_clean.evt
Size (bytes)201,628,80050,437,440
Size192.3 MB 48.1 MB
Events in quadrant A1,238,416339,414
Events in quadrant B1,294,284347,038
Events in quadrant C1,305,244330,977
Events in quadrant D2,085,422318,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054000
B055160
C055450
D080350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A266050.187970%
B2660170.639098%
C2661341.277715%
D2661953.570086%

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 2660 2660 0 0 0.00% 0.00%
B 2660 2660 11 11 0.41% 0.41%
C 2661 2661 1 1 0.04% 0.04%
D 2661 2661 73 73 2.74% 2.74%

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 0 13 18266 279.47 312 305 64.3
A 5 168 11361 172.03 312 305 64.3
A 13 254 3700 52.83 312 305 64.3
B 3 64 51442 826.84 315 306 61.8
B 12 111 7388 114.51 315 306 61.8
B 11 111 6596 101.71 315 306 61.8
C 14 238 50219 666.95 311 312 74.8
C 15 208 34359 455.0 311 312 74.8
C 8 128 5485 69.13 311 312 74.8
D 1 52 495011 6120.56 303 296 80.8
D 7 80 250189 3091.65 303 296 80.8
D 11 176 121727 1502.33 303 296 80.8

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