ASTROSAT CZTI

Data Quality Report

Orbit 38003

Creation date: 2024-06-27T21:47:12.598156
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/AS1A11_082T01_9000005356_38003cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38003cztM0_level2_quad_clean.evt
Size (bytes)560,275,20092,808,000
Size534.3 MB 88.5 MB
Events in quadrant A7,154,343595,818
Events in quadrant B3,265,677662,881
Events in quadrant C2,904,522659,559
Events in quadrant D6,968,409488,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252422
B0135421
C0121541
D0245601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A576381614.159292%
B57631973.418358%
C5763180.312337%
D5763134623.355891%

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 7135 5764 715 715 10.02% 12.40%
B 7135 5764 124 124 1.74% 2.15%
C 7135 5764 12 12 0.17% 0.21%
D 7135 5764 1148 1148 16.09% 19.92%

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 15 222 3537734 27433.3 631 618 128.9
A 12 16 613932 4756.76 631 618 128.9
A 10 83 359821 2785.92 631 618 128.9
B 4 171 516945 4212.99 642 625 122.6
B 5 172 61210 494.35 642 625 122.6
B 5 200 43726 351.69 642 625 122.6
C 15 214 243791 1638.09 636 641 148.4
C 14 254 85114 569.09 636 641 148.4
C 1 23 59194 394.47 636 641 148.4
D 2 249 2174226 15259.29 579 561 142.4
D 1 52 1900888 13340.44 579 561 142.4
D 7 223 306594 2148.37 579 561 142.4

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