ASTROSAT CZTI

Data Quality Report

Orbit 14870

Creation date: 2024-06-27T17:00:46.390651
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/AS1G08_044T01_9000002196_14870cztM0_level2.evt modeM0/AS1G08_044T01_9000002196_14870cztM0_level2_quad_clean.evt
Size (bytes)597,657,600101,960,640
Size570.0 MB 97.2 MB
Events in quadrant A3,829,242658,668
Events in quadrant B3,926,032658,310
Events in quadrant C3,833,753627,194
Events in quadrant D5,991,494610,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162423
B0164032
C0161012
D0233032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76591111.449275%
B76591051.370936%
C7659660.861731%
D76596798.865387%

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 7915 7661 30 30 0.38% 0.39%
B 7915 7661 1 1 0.01% 0.01%
C 7915 7661 0 0 0.00% 0.00%
D 7915 7661 436 436 5.51% 5.69%

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 15 239 137880 710.9 948 928 192.6
A 12 189 39731 201.42 948 928 192.6
A 0 226 8315 38.35 948 928 192.6
B 0 219 105346 561.01 947 923 186.1
B 0 205 36719 192.31 947 923 186.1
B 0 189 27956 145.23 947 923 186.1
C 3 233 227543 1055.26 917 922 214.8
C 9 54 19315 85.65 917 922 214.8
C 3 232 6682 26.82 917 922 214.8
D 13 104 2031001 9619.71 883 861 211.0
D 7 254 600822 2842.88 883 861 211.0
D 2 234 27261 125.09 883 861 211.0

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