ASTROSAT CZTI

Data Quality Report

Orbit 04892

Creation date: 2024-06-27T14:48:30.774501
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/AS1G05_237T01_9000000620_04892cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04892cztM0_level2_quad_clean.evt
Size (bytes)485,959,68067,282,560
Size463.4 MB 64.2 MB
Events in quadrant A3,458,009400,520
Events in quadrant B3,649,270402,432
Events in quadrant C3,230,379399,173
Events in quadrant D3,935,354378,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141012
B0147811
C0135831
D0158571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65481392.122786%
B65481111.695174%
C6548861.313378%
D65481522.321319%

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 7778 6548 19 19 0.24% 0.29%
B 7778 6548 4 4 0.05% 0.06%
C 7778 6548 0 0 0.00% 0.00%
D 7778 6548 44 44 0.57% 0.67%

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 0 50 113655 650.87 855 839 173.3
A 8 15 45756 259.14 855 839 173.3
A 12 194 8584 44.68 855 839 173.3
B 15 54 80081 492.06 855 839 161.0
B 15 204 75127 461.3 855 839 161.0
B 5 6 60221 368.74 855 839 161.0
C 12 4 9976 48.38 824 832 189.0
C 13 61 6820 31.68 824 832 189.0
C 8 222 3236 12.72 824 832 189.0
D 2 136 288628 1418.55 827 804 202.9
D 13 235 160887 788.97 827 804 202.9
D 1 31 138989 681.05 827 804 202.9

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