ASTROSAT CZTI

Data Quality Report

Orbit 42555

Creation date: 2024-06-27T22:41:33.303203
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/AS1A12_102T01_9000005812_42555cztM0_level2.fits modeM0/AS1A12_102T01_9000005812_42555cztM0_level2_quad_clean.evt
Size (bytes)958,893,120234,446,400
Size914.5 MB 223.6 MB
Events in quadrant A7,487,8391,559,507
Events in quadrant B6,359,6471,590,905
Events in quadrant C6,662,4491,535,774
Events in quadrant D13,840,5131,390,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317694
B0300774
C0299604
D0519469

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14794350.236582%
B14794250.168987%
C14794120.081114%
D147925033.400487%

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 18969 14797 11 11 0.06% 0.07%
B 18969 14797 11 11 0.06% 0.07%
C 18969 14797 3 3 0.02% 0.02%
D 18969 14796 429 429 2.26% 2.90%

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 10 83 1347433 4255.96 1556 1519 316.2
A 2 79 57862 178.16 1556 1519 316.2
A 13 248 42423 129.34 1556 1519 316.2
B 0 245 110906 367.58 1544 1501 297.6
B 0 186 76223 251.05 1544 1501 297.6
B 5 172 72209 237.57 1544 1501 297.6
C 15 214 604793 1718.51 1519 1527 351.0
C 14 254 68637 191.18 1519 1527 351.0
C 12 249 39841 109.14 1519 1527 351.0
D 2 16 6558625 18152.18 1497 1455 361.2
D 13 249 477238 1317.11 1497 1455 361.2
D 5 222 224731 618.09 1497 1455 361.2

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