ASTROSAT CZTI

Data Quality Report

Orbit 30865

Creation date: 2024-06-27T20:20:32.039499
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/AS1A10_071T46_9000004460_30865cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30865cztM0_level2_quad_clean.evt
Size (bytes)806,469,12091,704,960
Size769.1 MB 87.5 MB
Events in quadrant A4,134,306578,518
Events in quadrant B10,763,313545,661
Events in quadrant C4,270,068549,451
Events in quadrant D4,711,286542,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173561
B0376881
C0175401
D0188171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80654225.232486%
B8066159619.786759%
C80664725.851723%
D80663474.302008%

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 8065 8065 11 11 0.14% 0.14%
B 8066 8066 476 476 5.90% 5.90%
C 8066 8066 2 2 0.02% 0.02%
D 8066 8066 5 5 0.06% 0.06%

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 13 146319 694.94 1030 1005 209.1
A 13 254 15234 68.05 1030 1005 209.1
A 5 168 13906 61.7 1030 1005 209.1
B 6 36 4509814 23483.92 985 959 192.0
B 6 159 2177287 11335.19 985 959 192.0
B 5 172 62105 318.47 985 959 192.0
C 14 238 157900 678.06 983 987 231.4
C 2 16 131339 563.29 983 987 231.4
C 3 233 116353 498.53 983 987 231.4
D 8 195 604847 2542.38 998 972 237.5
D 13 168 109849 458.38 998 972 237.5
D 12 233 80263 333.82 998 972 237.5

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