ASTROSAT CZTI

Data Quality Report

Orbit 35108

Creation date: 2022-03-28T16:40:17.835397
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/AS1T05_015T01_9000005026_35108cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35108cztM0_level2_quad_clean.evt
Size (bytes)668,160,00075,568,320
Size637.2 MB 72.1 MB
Events in quadrant A5,060,136467,976
Events in quadrant B4,009,626480,343
Events in quadrant C3,303,464481,264
Events in quadrant D7,459,296441,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191703
B0158972
C0135422
D0263752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59704217.051926%
B59703646.097152%
C59701101.842546%
D597066511.139028%

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 8656 5972 232 232 2.68% 3.88%
B 8656 5972 194 194 2.24% 3.25%
C 8656 5971 77 77 0.89% 1.29%
D 8656 5972 450 450 5.20% 7.54%

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 15 169 2370872 17650.65 668 657 134.3
A 10 83 83180 614.54 668 657 134.3
A 13 6 15313 109.14 668 657 134.3
B 5 172 1175340 9209.91 668 651 127.5
B 0 189 52834 409.13 668 651 127.5
B 5 255 43881 338.94 668 651 127.5
C 0 10 324592 2099.53 668 673 154.3
C 15 214 248748 1607.94 668 673 154.3
C 5 4 63115 404.73 668 673 154.3
D 8 195 3846748 24408.08 642 624 157.6
D 7 80 250714 1587.11 642 624 157.6
D 13 249 222663 1409.09 642 624 157.6

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