ASTROSAT CZTI

Data Quality Report

Orbit 05505

Creation date: 2024-06-27T14:56:03.120584
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_162T01_9000000704_05505cztM0_level2.evt modeM0/AS1A02_162T01_9000000704_05505cztM0_level2_quad_clean.evt
Size (bytes)628,614,72073,152,000
Size599.5 MB 69.8 MB
Events in quadrant A3,598,523424,925
Events in quadrant B6,687,694409,308
Events in quadrant C3,817,956429,228
Events in quadrant D4,399,089403,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164989
B02541724
C0171382
D0189622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01602
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78901852.344740%
B78886598.354462%
C78932252.850627%
D78933174.016217%

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 8088 7895 1 1 0.01% 0.01%
B 8088 7895 195 195 2.41% 2.47%
C 8088 7895 33 33 0.41% 0.42%
D 8088 7895 124 124 1.53% 1.57%

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 50 11745 56.26 928 906 192.7
A 0 226 9145 42.76 928 906 192.7
A 12 194 9066 42.35 928 906 192.7
B 15 255 2337364 13026.69 921 899 179.4
B 15 204 518287 2884.64 921 899 179.4
B 4 48 166054 920.8 921 899 179.4
C 9 247 214081 1005.26 905 908 212.1
C 1 16 55949 259.56 905 908 212.1
C 13 61 7346 30.36 905 908 212.1
D 2 152 552550 2465.86 898 867 223.7
D 2 136 219910 979.06 898 867 223.7
D 2 33 125202 555.74 898 867 223.7

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