ASTROSAT CZTI

Data Quality Report

Orbit 09987

Creation date: 2024-06-27T15:53:22.289118
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/AS1G07_074T01_9000001426_09987cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09987cztM0_level2_quad_clean.evt
Size (bytes)592,657,92085,717,440
Size565.2 MB 81.7 MB
Events in quadrant A4,071,687516,993
Events in quadrant B3,776,412583,188
Events in quadrant C2,820,715576,492
Events in quadrant D6,862,800488,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161933
B0153499
C0126136
D0246602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A614980413.075297%
B61481292.098243%
C614770.113877%
D6149113018.376972%

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 7529 6149 272 272 3.61% 4.42%
B 7529 6150 69 69 0.92% 1.12%
C 7529 6150 0 0 0.00% 0.00%
D 7529 6150 1210 1210 16.07% 19.67%

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 14 111 1364783 9725.68 695 684 140.3
A 15 174 16988 116.24 695 684 140.3
A 8 15 11013 73.64 695 684 140.3
B 0 85 407176 2855.93 751 736 142.3
B 4 239 138048 964.85 751 736 142.3
B 11 51 105105 733.37 751 736 142.3
C 9 221 6247 33.31 720 725 165.8
C 13 61 5535 29.01 720 725 165.8
C 12 4 4254 21.29 720 725 165.8
D 1 52 3496570 19432.26 660 644 179.9
D 8 195 256411 1421.69 660 644 179.9
D 2 16 197727 1095.49 660 644 179.9

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