ASTROSAT CZTI

Data Quality Report

Orbit 05928

Creation date: 2024-06-27T15:00:55.620604
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/AS1A02_174T01_9000000766_05928cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05928cztM0_level2_quad_clean.evt
Size (bytes)231,952,32036,273,600
Size221.2 MB 34.6 MB
Events in quadrant A1,535,447228,348
Events in quadrant B1,833,597217,583
Events in quadrant C1,471,795230,808
Events in quadrant D1,958,211188,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043
B044
C042
D043

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167509817
B01888611305
C0164169590
D02166613916

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165103
B016586
C0165102
D016293

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3380361.065089%
B3263732.237205%
C3394130.383029%
D2985822.747069%

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 8325 4500 14 14 0.17% 0.31%
B 8367 4337 36 36 0.43% 0.83%
C 8266 4514 0 0 0.00% 0.00%
D 8292 4028 46 46 0.55% 1.14%

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 50 50542 627.5 381 372 80.0
A 7 16 16030 195.84 381 372 80.0
A 12 194 3759 42.36 381 372 80.0
B 15 255 279866 3885.06 367 359 71.9
B 15 85 38740 533.48 367 359 71.9
B 0 214 32614 448.33 367 359 71.9
C 8 128 4325 44.75 373 377 88.2
C 13 61 3028 30.05 373 377 88.2
C 9 68 2999 29.72 373 377 88.2
D 2 63 393855 4845.57 326 314 81.2
D 2 14 120168 1475.73 326 314 81.2
D 8 195 83345 1022.34 326 314 81.2

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