ASTROSAT CZTI

Data Quality Report

Orbit 28868

Creation date: 2024-06-27T19:57:23.868249
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/AS1A10_123T06_9000004138_28868cztM0_level2.evt modeM0/AS1A10_123T06_9000004138_28868cztM0_level2_quad_clean.evt
Size (bytes)753,344,64089,778,240
Size718.4 MB 85.6 MB
Events in quadrant A4,515,753551,719
Events in quadrant B3,873,916569,186
Events in quadrant C4,225,523542,638
Events in quadrant D9,670,432509,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183812
B0164742
C0173992
D0340432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78293013.844680%
B78292683.423170%
C78293254.151233%
D7830126016.091954%

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 7969 7829 73 73 0.92% 0.93%
B 7969 7829 4 4 0.05% 0.05%
C 7969 7829 0 0 0.00% 0.00%
D 7970 7830 1241 1241 15.57% 15.85%

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 14 235 579090 2948.62 968 945 196.1
A 1 113 150103 760.73 968 945 196.1
A 5 98 50022 250.3 968 945 196.1
B 12 111 23269 118.86 960 932 187.9
B 11 111 20726 105.33 960 932 187.9
B 15 201 19813 100.47 960 932 187.9
C 3 233 418282 1930.5 918 919 216.2
C 14 238 156707 720.59 918 919 216.2
C 4 254 54457 247.64 918 919 216.2
D 8 195 5128915 23425.8 909 882 218.9
D 7 80 677157 3089.35 909 882 218.9
D 1 52 327733 1493.12 909 882 218.9

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