ASTROSAT CZTI

Data Quality Report

Orbit 16451

Creation date: 2024-06-27T17:22:52.639091
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/AS1C04_007T04_9000002430_16451cztM0_level2.evt modeM0/AS1C04_007T04_9000002430_16451cztM0_level2_quad_clean.evt
Size (bytes)1,234,635,840228,142,080
Size1.1 GB 217.6 MB
Events in quadrant A8,494,2591,421,325
Events in quadrant B9,870,9411,456,614
Events in quadrant C8,907,5821,418,418
Events in quadrant D8,903,2431,375,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374494
B0407423
C0379143
D0392303

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179692251.252156%
B179692881.602760%
C179692571.430241%
D179692821.569369%

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 19810 17971 67 67 0.34% 0.37%
B 19810 17970 73 73 0.37% 0.41%
C 19810 17972 5 5 0.03% 0.03%
D 19810 17971 139 139 0.70% 0.77%

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 15 174 280140 643.88 2130 2082 431.8
A 13 248 22728 47.81 2130 2082 431.8
A 0 226 18884 38.91 2130 2082 431.8
B 15 35 447522 1099.6 2139 2084 405.1
B 7 220 307624 754.25 2139 2084 405.1
B 0 198 143460 349.0 2139 2084 405.1
C 3 233 545408 1137.46 2044 2051 477.7
C 14 238 313172 651.3 2044 2051 477.7
C 0 207 83956 171.46 2044 2051 477.7
D 1 52 431696 848.98 2064 1998 506.1
D 10 70 204907 400.9 2064 1998 506.1
D 5 222 197577 386.42 2064 1998 506.1

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