ASTROSAT CZTI

Data Quality Report

Orbit 42758

Creation date: 2024-06-27T22:43:53.166453
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_013T01_9000005822_42758cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42758cztM0_level2_quad_clean.evt
Size (bytes)1,134,273,600252,241,920
Size1.1 GB 240.6 MB
Events in quadrant A10,439,2461,691,973
Events in quadrant B8,204,1871,687,287
Events in quadrant C13,211,5111,620,871
Events in quadrant D8,928,3581,563,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403814
B0348864
C0494424
D0374085

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155655963.829104%
B155653982.557019%
C1556510957.035014%
D155644853.116166%

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 19773 15568 466 466 2.36% 2.99%
B 19773 15567 354 354 1.79% 2.27%
C 19773 15568 1082 1082 5.47% 6.95%
D 19772 15567 484 484 2.45% 3.11%

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 1571246 4482.87 1713 1677 350.1
A 13 248 1359603 3878.39 1713 1677 350.1
A 15 237 594514 1693.21 1713 1677 350.1
B 0 229 782949 2403.64 1690 1642 325.1
B 5 172 299734 917.06 1690 1642 325.1
B 10 246 120682 366.22 1690 1642 325.1
C 0 239 5326661 13866.54 1643 1655 384.0
C 14 254 778841 2023.83 1643 1655 384.0
C 15 214 624831 1622.78 1643 1655 384.0
D 12 233 1115671 2694.75 1681 1635 413.4
D 2 249 336081 808.99 1681 1635 413.4
D 13 249 270968 651.49 1681 1635 413.4

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