ASTROSAT CZTI

Data Quality Report

Orbit 06019

Creation date: 2024-06-27T15:01:50.099895
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_006T01_9000000776_06019cztM0_level2.evt modeM0/AS1A02_006T01_9000000776_06019cztM0_level2_quad_clean.evt
Size (bytes)1,559,963,520301,176,000
Size1.5 GB 287.2 MB
Events in quadrant A13,562,6611,902,395
Events in quadrant B11,509,8021,957,774
Events in quadrant C10,843,7441,881,830
Events in quadrant D9,824,4311,849,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0482
C0480
D0482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047010
B047010
C047014
D047014

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0573842072
B0506771756
C0505212495
D0475851462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221543461.561795%
B222203561.602160%
C221734622.083615%
D222692120.951996%

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 27787 22773 31 31 0.11% 0.14%
B 27788 22783 69 69 0.25% 0.30%
C 27790 22697 202 202 0.73% 0.89%
D 27789 22827 29 29 0.10% 0.13%

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 13 34 3318485 6369.63 2567 2507 520.6
A 7 16 166546 315.1 2567 2507 520.6
A 8 15 83830 156.21 2567 2507 520.6
B 15 204 558083 1112.85 2615 2551 499.2
B 3 64 542238 1081.11 2615 2551 499.2
B 7 221 91672 178.53 2615 2551 499.2
C 1 241 1059773 1829.46 2493 2499 577.9
C 1 16 30457 48.38 2493 2499 577.9
C 13 61 19763 29.87 2493 2499 577.9
D 12 221 90732 144.99 2509 2430 609.0
D 2 206 75662 120.25 2509 2430 609.0
D 5 97 74595 118.5 2509 2430 609.0

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