ASTROSAT CZTI

Data Quality Report

Orbit 07916

Creation date: 2024-06-27T15:25:31.112896
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/AS1A02_027T01_9000001084_07916cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07916cztM0_level2_quad_clean.evt
Size (bytes)479,223,360101,736,000
Size457.0 MB 97.0 MB
Events in quadrant A2,986,447651,787
Events in quadrant B3,244,554680,286
Events in quadrant C4,308,302675,408
Events in quadrant D3,552,173639,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130303
B0137272
C0168722
D0146562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6220310.498392%
B6220430.691318%
C62202143.440514%
D6220671.077170%

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 7515 6221 0 0 0.00% 0.00%
B 7515 6221 4 4 0.05% 0.06%
C 7515 6221 80 80 1.06% 1.29%
D 7515 6221 37 37 0.49% 0.59%

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 0 226 7279 41.6 772 755 156.8
A 12 194 6923 39.33 772 755 156.8
A 15 234 5410 29.68 772 755 156.8
B 4 81 78371 521.87 789 772 148.7
B 4 239 46200 305.51 789 772 148.7
B 0 168 17900 115.19 789 772 148.7
C 1 16 1323994 7576.72 763 769 174.6
C 12 4 9061 47.48 763 769 174.6
C 13 61 5841 29.04 763 769 174.6
D 1 52 522666 2817.92 759 737 185.2
D 2 14 40645 215.47 759 737 185.2
D 1 31 37855 200.4 759 737 185.2

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