ASTROSAT CZTI

Data Quality Report

Orbit 18437

Creation date: 2024-06-27T17:49:48.478047
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_199T01_9000002732_18437cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18437cztM0_level2_quad_clean.evt
Size (bytes)494,066,880102,216,960
Size471.2 MB 97.5 MB
Events in quadrant A3,470,500654,440
Events in quadrant B3,504,489671,357
Events in quadrant C3,500,818649,217
Events in quadrant D4,012,294633,830

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150312
B0150772
C0150262
D0167502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6989771.101731%
B69901121.602289%
C69901281.831187%
D69901492.131617%

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 9099 6991 1 1 0.01% 0.01%
B 9100 6992 10 10 0.11% 0.14%
C 9100 6992 0 0 0.00% 0.00%
D 9100 6992 47 47 0.52% 0.67%

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 14 238 87245 494.64 872 855 174.7
A 4 2 20170 110.59 872 855 174.7
A 15 174 9260 48.12 872 855 174.7
B 3 64 40827 240.05 875 852 166.5
B 10 245 38132 223.87 875 852 166.5
B 12 111 19777 113.64 875 852 166.5
C 14 238 130962 656.42 849 854 198.2
C 3 233 37424 184.5 849 854 198.2
C 9 54 20603 99.64 849 854 198.2
D 1 52 518318 2480.09 855 828 208.7
D 12 110 158157 754.0 855 828 208.7
D 13 168 90903 431.69 855 828 208.7

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