ASTROSAT CZTI

Data Quality Report

Orbit 22044

Creation date: 2024-06-27T18:35:46.404777
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/AS1A07_027T02_9000003258_22044cztM0_level2.evt modeM0/AS1A07_027T02_9000003258_22044cztM0_level2_quad_clean.evt
Size (bytes)547,833,600103,599,360
Size522.5 MB 98.8 MB
Events in quadrant A3,732,628681,487
Events in quadrant B3,864,476690,826
Events in quadrant C4,129,967646,152
Events in quadrant D4,402,512644,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155492
B0158623
C0167982
D0176812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68011241.823261%
B68011502.205558%
C68013304.852228%
D68012633.867078%

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 9351 6801 0 0 0.00% 0.00%
B 9351 6801 13 13 0.14% 0.19%
C 9351 6801 116 116 1.24% 1.71%
D 9351 6801 151 151 1.61% 2.22%

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 13 254 9769 46.32 969 954 190.3
A 0 226 8519 39.75 969 954 190.3
A 3 137 7567 34.75 969 954 190.3
B 3 64 86648 482.86 959 941 177.5
B 12 111 20955 112.76 959 941 177.5
B 11 111 18561 99.27 959 941 177.5
C 10 22 421087 2015.9 911 918 208.4
C 14 238 146406 698.03 911 918 208.4
C 8 208 7299 30.62 911 918 208.4
D 11 176 663903 2996.16 931 907 221.3
D 1 52 146035 655.85 931 907 221.3
D 2 136 41239 182.26 931 907 221.3

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