ASTROSAT CZTI

Data Quality Report

Orbit 16967

Creation date: 2024-06-27T17:30:10.362236
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_188T01_9000002520_16967cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16967cztM0_level2_quad_clean.evt
Size (bytes)536,425,92081,524,160
Size511.6 MB 77.7 MB
Events in quadrant A3,214,862503,901
Events in quadrant B3,654,552509,323
Events in quadrant C3,787,264495,990
Events in quadrant D5,124,627482,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141021
B0150901
C0153971
D0197651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68461682.453988%
B68472183.183876%
C68472063.008617%
D68475317.755221%

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 7332 6848 1 1 0.01% 0.01%
B 7333 6849 8 8 0.11% 0.12%
C 7333 6849 0 0 0.00% 0.00%
D 7333 6849 275 275 3.75% 4.02%

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 12 189 7566 39.57 833 813 170.7
A 0 226 7400 38.6 833 813 170.7
A 12 194 6247 31.84 833 813 170.7
B 3 64 141639 887.84 828 805 158.6
B 7 220 120232 752.88 828 805 158.6
B 3 209 36734 226.5 828 805 158.6
C 3 233 519148 2754.22 806 810 188.2
C 14 238 123484 651.84 806 810 188.2
C 13 61 5604 25.47 806 810 188.2
D 1 52 1767159 9030.81 800 776 195.6
D 10 70 135802 690.33 800 776 195.6
D 15 0 118991 604.39 800 776 195.6

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