ASTROSAT CZTI

Data Quality Report

Orbit 18832

Creation date: 2024-06-27T17:55:24.117430
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/AS1A05_173T01_9000002812_18832cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18832cztM0_level2_quad_clean.evt
Size (bytes)480,833,28086,397,120
Size458.6 MB 82.4 MB
Events in quadrant A3,245,835562,590
Events in quadrant B3,468,026567,487
Events in quadrant C3,273,776538,338
Events in quadrant D4,164,469526,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129431
B0137351
C0130081
D0160691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60351021.690141%
B60361242.054341%
C6036931.540755%
D60363615.980782%

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 7300 6036 19 19 0.26% 0.31%
B 7301 6037 32 32 0.44% 0.53%
C 7301 6037 16 16 0.22% 0.27%
D 7301 6037 257 257 3.52% 4.26%

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 5 98 51572 310.83 812 798 163.4
A 15 174 26663 158.34 812 798 163.4
A 8 205 18168 106.34 812 798 163.4
B 7 220 102940 681.44 798 782 149.9
B 15 36 54885 360.89 798 782 149.9
B 0 197 48568 318.75 798 782 149.9
C 14 238 120211 667.94 767 773 178.8
C 9 54 97189 539.2 767 773 178.8
C 3 233 39646 217.39 767 773 178.8
D 7 38 797905 4241.64 770 752 187.9
D 1 52 325040 1725.53 770 752 187.9
D 7 238 64917 341.42 770 752 187.9

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