ASTROSAT CZTI

Data Quality Report

Orbit 11278

Creation date: 2024-06-27T16:10:38.452215
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/AS1A04_044T01_9000001648_11278cztM0_level2.evt modeM0/AS1A04_044T01_9000001648_11278cztM0_level2_quad_clean.evt
Size (bytes)1,609,099,200216,357,120
Size1.5 GB 206.3 MB
Events in quadrant A11,595,6981,364,249
Events in quadrant B13,129,8541,418,609
Events in quadrant C7,799,8531,376,803
Events in quadrant D15,058,4451,218,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455695
B0504874
C0349634
D0564804

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1702511156.549192%
B17025174410.243759%
C17025790.464023%
D17025264815.553598%

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 19935 17028 738 738 3.70% 4.33%
B 19935 17027 852 852 4.27% 5.00%
C 19935 17029 0 0 0.00% 0.00%
D 19935 17027 2085 2085 10.46% 12.25%

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 8 5 1885462 4692.78 1993 1956 401.4
A 14 238 1690055 4205.92 1993 1956 401.4
A 8 15 93763 228.74 1993 1956 401.4
B 3 64 2397720 6311.07 1992 1945 379.6
B 4 239 2297097 6046.0 1992 1945 379.6
B 0 214 216044 563.99 1992 1945 379.6
C 13 61 14699 27.23 1998 2012 465.9
C 9 54 8568 14.07 1998 2012 465.9
C 8 128 6049 8.67 1998 2012 465.9
D 13 152 3355376 7765.25 1793 1743 431.9
D 10 253 2415662 5589.37 1793 1743 431.9
D 1 52 1109731 2565.52 1793 1743 431.9

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