ASTROSAT CZTI

Data Quality Report

Orbit 26911

Creation date: 2024-06-27T19:34:24.669848
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/AS1A09_038T18_9000003890_26911cztM0_level2.evt modeM0/AS1A09_038T18_9000003890_26911cztM0_level2_quad_clean.evt
Size (bytes)326,427,84062,568,000
Size311.3 MB 59.7 MB
Events in quadrant A2,106,461431,357
Events in quadrant B3,394,902382,357
Events in quadrant C1,597,224440,801
Events in quadrant D2,571,242414,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082360
B0120900
C065560
D097610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31681625.113636%
B316881525.726010%
C3168441.388889%
D31682096.597222%

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 4208 3169 97 97 2.31% 3.06%
B 4208 3169 741 741 17.61% 23.38%
C 4208 3169 0 0 0.00% 0.00%
D 4208 3169 147 147 3.49% 4.64%

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 565058 7002.63 394 387 80.6
A 8 192 21770 265.18 394 387 80.6
A 13 254 4856 55.42 394 387 80.6
B 0 189 1915339 28851.83 348 339 66.4
B 10 245 95153 1428.49 348 339 66.4
B 10 246 8135 117.46 348 339 66.4
C 14 238 62458 669.84 392 393 92.7
C 15 208 5946 59.93 392 393 92.7
C 2 16 3260 30.94 392 393 92.7
D 1 52 733564 7354.49 378 371 99.7
D 7 80 226341 2266.65 378 371 99.7
D 2 250 99202 991.35 378 371 99.7

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