ASTROSAT CZTI

Data Quality Report

Orbit 04187

Creation date: 2024-06-27T14:38:33.059442
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/AS1G05_240T01_9000000536_04187cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04187cztM0_level2_quad_clean.evt
Size (bytes)625,559,04077,163,840
Size596.6 MB 73.6 MB
Events in quadrant A5,239,922448,986
Events in quadrant B5,097,440443,547
Events in quadrant C3,995,917444,443
Events in quadrant D4,057,017430,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210003
B0204982
C0176332
D0178792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81892923.565759%
B81894495.482965%
C81891682.051533%
D81891141.392111%

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 8984 8193 39 39 0.43% 0.48%
B 8984 8193 192 192 2.14% 2.34%
C 8984 8193 8 8 0.09% 0.10%
D 8984 8193 35 35 0.39% 0.43%

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 0 199 1052591 5271.92 968 945 199.5
A 3 1 137752 685.82 968 945 199.5
A 0 50 114033 566.91 968 945 199.5
B 10 16 969729 5190.49 970 948 186.6
B 3 0 283275 1512.64 970 948 186.6
B 0 183 30306 157.29 970 948 186.6
C 9 144 302594 1370.4 944 948 220.1
C 13 61 7830 31.27 944 948 220.1
C 7 247 3192 10.19 944 948 220.1
D 13 239 135940 585.69 944 914 230.5
D 13 46 99077 425.79 944 914 230.5
D 10 172 78581 336.89 944 914 230.5

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