ASTROSAT CZTI

Data Quality Report

Orbit 09156

Creation date: 2024-06-27T15:42:03.254412
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/AS1C02_042T01_9000001278_09156cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09156cztM0_level2_quad_clean.evt
Size (bytes)461,347,200100,808,640
Size440.0 MB 96.1 MB
Events in quadrant A3,914,988643,244
Events in quadrant B3,224,964654,652
Events in quadrant C3,054,364652,149
Events in quadrant D3,310,898624,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162223
B0143292
C0139722
D0147612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6874620.901949%
B6874460.669188%
C6874410.596450%
D6874600.872854%

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 7734 6874 8 8 0.10% 0.12%
B 7734 6874 1 1 0.01% 0.01%
C 7734 6874 0 0 0.00% 0.00%
D 7734 6874 6 6 0.08% 0.09%

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 8 5 748746 4640.65 788 770 161.2
A 1 162 74163 455.35 788 770 161.2
A 1 178 15040 88.53 788 770 161.2
B 8 234 38084 244.47 796 772 152.6
B 0 219 25576 162.52 796 772 152.6
B 0 229 24254 153.86 796 772 152.6
C 8 208 13552 70.27 778 782 181.7
C 13 61 5940 28.38 778 782 181.7
C 9 68 3616 15.59 778 782 181.7
D 1 52 156743 814.49 777 751 191.5
D 7 71 63828 329.35 777 751 191.5
D 13 104 39694 203.33 777 751 191.5

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