ASTROSAT CZTI

Data Quality Report

Orbit 35621

Creation date: 2022-05-02T05:59:55.195747
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/AS1T05_028T01_9000005100_35621cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35621cztM0_level2_quad_clean.evt
Size (bytes)1,696,032,000234,360,000
Size1.6 GB 223.5 MB
Events in quadrant A10,199,4261,465,104
Events in quadrant B13,628,1971,458,684
Events in quadrant C13,523,2821,439,036
Events in quadrant D12,693,5891,385,544

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430818
B05330912
C0523588
D0505875

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195891120.571749%
B1958912266.258615%
C195887293.721666%
D195907513.833589%

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 25975 19594 72 72 0.28% 0.37%
B 25975 19594 814 814 3.13% 4.15%
C 25975 19594 565 565 2.18% 2.88%
D 25975 19594 607 607 2.34% 3.10%

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 7 16 892448 1964.35 2260 2215 453.2
A 10 83 443736 974.24 2260 2215 453.2
A 15 169 84429 181.41 2260 2215 453.2
B 5 172 4152427 9952.58 2202 2141 417.0
B 0 190 340205 810.69 2202 2141 417.0
B 0 189 113627 267.35 2202 2141 417.0
C 0 10 2408222 4767.6 2178 2190 504.7
C 9 187 1565648 3098.02 2178 2190 504.7
C 15 214 791785 1564.6 2178 2190 504.7
D 1 52 1050275 1998.82 2172 2119 524.4
D 7 80 1032415 1964.76 2172 2119 524.4
D 10 118 713565 1356.72 2172 2119 524.4

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