ASTROSAT CZTI

Data Quality Report

Orbit 49715

Creation date: 2024-12-10T14:11:49.629642
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/AS1T05_233T01_9000006438_49715cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49715cztM0_level2_quad_clean.evt
Size (bytes)1,227,542,40049,325,760
Size1.1 GB 47.0 MB
Events in quadrant A20,043,025174,430
Events in quadrant B5,028,094752,486
Events in quadrant C5,337,1694,209
Events in quadrant D14,444,41327,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0648700
B0200360
C0212630
D0480770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75317531100.000000%
B75312593.439118%
C75317531100.000000%
D75317531100.000000%

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 7531 7531 7400 7400 98.26% 98.26%
B 7531 7531 174 174 2.31% 2.31%
C 7530 7530 1 1 0.01% 0.01%
D 7530 7530 3495 3495 46.41% 46.41%

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 5412701 72539.92 218 209 74.6
A 0 99 4815911 64541.56 218 209 74.6
A 0 98 2473729 33150.89 218 209 74.6
B 3 232 631002 3743.44 786 761 168.4
B 9 218 209401 1239.26 786 761 168.4
B 7 252 137298 810.99 786 761 168.4
C 15 190 973070 85396.44 11 10 11.4
C 15 181 717292 62949.18 11 10 11.4
C 15 180 637519 55948.24 11 10 11.4
D 15 122 4230081 107949.26 56 50 39.2
D 7 61 2661747 67925.8 56 50 39.2
D 15 184 1553747 39649.93 56 50 39.2

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