ASTROSAT CZTI

Data Quality Report

Orbit 19658

Creation date: 2024-06-27T18:05:19.097707
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/AS1T03_005T01_9000002928_19658cztM0_level2.evt modeM0/AS1T03_005T01_9000002928_19658cztM0_level2_quad_clean.evt
Size (bytes)459,331,20065,980,800
Size438.1 MB 62.9 MB
Events in quadrant A3,218,834397,093
Events in quadrant B3,270,241402,658
Events in quadrant C3,235,061378,601
Events in quadrant D3,749,937370,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133621
B0134041
C0133861
D0154652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64301041.617418%
B64301211.881804%
C64311111.726015%
D6430981.524106%

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 7545 6430 0 0 0.00% 0.00%
B 7545 6430 0 0 0.00% 0.00%
C 7546 6431 0 0 0.00% 0.00%
D 7545 6430 7 7 0.09% 0.11%

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 11 29 9058 48.96 834 818 168.3
A 13 254 7183 37.82 834 818 168.3
A 0 226 7169 37.74 834 818 168.3
B 12 111 19175 117.12 828 808 156.8
B 11 111 16815 102.07 828 808 156.8
B 0 198 15331 92.61 828 808 156.8
C 14 238 122985 663.16 787 792 184.3
C 3 233 26341 138.66 787 792 184.3
C 9 221 10541 52.91 787 792 184.3
D 1 52 694789 3611.81 794 773 192.2
D 7 96 27506 139.12 794 773 192.2
D 2 234 22427 112.69 794 773 192.2

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