ASTROSAT CZTI

Data Quality Report

Orbit 31282

Creation date: 2024-06-27T20:26:07.532911
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/AS1T04_024T01_9000004530_31282cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31282cztM0_level2_quad_clean.evt
Size (bytes)567,253,44073,198,080
Size541.0 MB 69.8 MB
Events in quadrant A3,491,254457,188
Events in quadrant B5,387,910447,191
Events in quadrant C3,874,755424,684
Events in quadrant D3,985,992434,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141502
B0202632
C0154552
D0159802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64931121.724935%
B64932073.188049%
C64942363.634124%
D64941061.632276%

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 7693 6494 0 0 0.00% 0.00%
B 7693 6494 7 7 0.09% 0.11%
C 7694 6495 10 10 0.13% 0.15%
D 7694 6495 20 20 0.26% 0.31%

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 13 254 13440 69.73 905 890 180.0
A 3 137 8522 42.4 905 890 180.0
A 0 226 7678 37.71 905 890 180.0
B 6 159 1723251 10401.33 879 858 165.6
B 4 80 158235 950.38 879 858 165.6
B 4 187 25831 150.81 879 858 165.6
C 3 233 204288 1051.73 842 851 193.4
C 0 10 178580 918.82 842 851 193.4
C 14 238 161102 828.46 842 851 193.4
D 8 195 552800 2554.23 868 848 216.1
D 2 250 88927 407.6 868 848 216.1
D 2 120 36261 163.88 868 848 216.1

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