ASTROSAT CZTI

Data Quality Report

Orbit 06276

Creation date: 2024-06-27T15:05:02.117108
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/AS1C02_018T02_9000000824_06276cztM0_level2.evt modeM0/AS1C02_018T02_9000000824_06276cztM0_level2_quad_clean.evt
Size (bytes)585,236,16068,417,280
Size558.1 MB 65.2 MB
Events in quadrant A3,977,298400,527
Events in quadrant B3,697,442404,325
Events in quadrant C3,212,135410,619
Events in quadrant D6,364,906370,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161063
B0155772
C0143972
D0236942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69731011.448444%
B69732052.939911%
C6973821.175964%
D697370310.081744%

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 8553 6974 1 1 0.01% 0.01%
B 8553 6974 72 72 0.84% 1.03%
C 8553 6974 0 0 0.00% 0.00%
D 8553 6973 635 635 7.42% 9.11%

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 8 15 461594 2723.86 823 806 169.2
A 15 236 268475 1582.27 823 806 169.2
A 13 251 67107 391.93 823 806 169.2
B 3 64 356255 2203.75 830 810 161.3
B 0 219 101728 625.69 830 810 161.3
B 12 111 16275 95.88 830 810 161.3
C 9 54 53942 281.58 808 811 188.7
C 13 61 6466 29.97 808 811 188.7
C 1 16 3531 14.42 808 811 188.7
D 12 220 2384915 12399.76 777 753 192.3
D 12 221 431860 2242.14 777 753 192.3
D 12 110 179861 931.52 777 753 192.3

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