ASTROSAT CZTI

Data Quality Report

Orbit 21546

Creation date: 2024-06-27T18:29:06.505147
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/AS1A05_166T01_9000003192_21546cztM0_level2.evt modeM0/AS1A05_166T01_9000003192_21546cztM0_level2_quad_clean.evt
Size (bytes)869,218,560169,090,560
Size829.0 MB 161.3 MB
Events in quadrant A5,613,2711,097,496
Events in quadrant B5,880,8851,111,314
Events in quadrant C5,950,3311,076,401
Events in quadrant D8,050,720989,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249172
B0254442
C0257962
D0322912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12243360.294046%
B12244650.530872%
C122431531.249694%
D122437606.207629%

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 13603 12245 3 3 0.02% 0.02%
B 13604 12246 19 19 0.14% 0.16%
C 13603 12245 72 72 0.53% 0.59%
D 13603 12245 706 706 5.19% 5.77%

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 12 96 58097 195.28 1439 1406 290.3
A 13 254 19369 61.88 1439 1406 290.3
A 0 226 12480 38.15 1439 1406 290.3
B 0 230 89965 325.75 1442 1408 271.9
B 4 190 56168 201.43 1442 1408 271.9
B 3 64 44908 160.01 1442 1408 271.9
C 3 233 356071 1101.64 1376 1380 322.0
C 14 238 216544 668.28 1376 1380 322.0
C 0 239 14955 42.16 1376 1380 322.0
D 7 38 1697387 5276.04 1342 1305 321.5
D 1 52 541114 1679.2 1342 1305 321.5
D 14 35 244985 758.02 1342 1305 321.5

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