ASTROSAT CZTI

Data Quality Report

Orbit 49808

Creation date: 2024-12-13T06:24:53.847878
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/AS1A13_037T01_9000006440_49808cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49808cztM0_level2_quad_clean.evt
Size (bytes)1,076,463,36056,986,560
Size1.0 GB 54.3 MB
Events in quadrant A7,256,369530,722
Events in quadrant B3,550,928672,551
Events in quadrant C13,417,34944,370
Events in quadrant D15,116,38421,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260271
B0150611
C0443951
D0493428

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6538113117.298868%
B6539791.208136%
C6539614193.913442%
D6538635597.200979%

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 7607 6537 1027 1027 13.50% 15.71%
B 7609 6540 53 53 0.70% 0.81%
C 7608 6538 3925 3925 51.59% 60.03%
D 7607 6537 5758 5758 75.69% 88.08%

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 0 98 1680656 10067.17 655 636 166.9
A 15 63 659235 3946.52 655 636 166.9
A 8 8 413399 2473.4 655 636 166.9
B 5 185 323781 2198.84 693 670 146.9
B 4 206 111956 757.33 693 670 146.9
B 5 172 50147 336.7 693 670 146.9
C 15 147 3779150 68128.05 169 166 55.5
C 1 44 3389279 61099.41 169 166 55.5
C 15 197 2867231 51687.85 169 166 55.5
D 7 61 7184636 69476.57 306 294 103.4
D 15 184 1037727 10032.55 306 294 103.4
D 15 168 855161 8267.04 306 294 103.4

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