ASTROSAT CZTI

Data Quality Report

Orbit 22638

Creation date: 2024-06-27T18:43:53.572004
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_112T01_9000003360_22638cztM0_level2.evt modeM0/AS1A07_112T01_9000003360_22638cztM0_level2_quad_clean.evt
Size (bytes)521,902,08071,562,240
Size497.7 MB 68.2 MB
Events in quadrant A3,343,564446,798
Events in quadrant B3,392,769452,646
Events in quadrant C3,421,732437,273
Events in quadrant D5,234,336404,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136171
B0137491
C0138571
D0198511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60991031.688801%
B60991252.049516%
C60991502.459420%
D61004597.524590%

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 7404 6100 0 0 0.00% 0.00%
B 7404 6100 1 1 0.01% 0.02%
C 7404 6100 2 2 0.03% 0.03%
D 7405 6101 313 313 4.23% 5.13%

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 11 47 10478 56.31 865 849 171.0
A 13 254 9834 52.55 865 849 171.0
A 0 226 7700 40.07 865 849 171.0
B 0 229 25134 153.46 851 831 158.4
B 12 111 17917 107.89 851 831 158.4
B 11 111 15964 95.56 851 831 158.4
C 14 238 134451 696.91 830 836 191.7
C 0 10 31477 159.82 830 836 191.7
C 10 22 22114 110.98 830 836 191.7
D 1 52 1482205 7463.72 828 808 198.5
D 7 238 575800 2896.98 828 808 198.5
D 12 227 26088 127.37 828 808 198.5

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