ASTROSAT CZTI

Data Quality Report

Orbit 20570

Creation date: 2024-06-27T18:16:57.737952
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_088T03_9000003042_20570cztM0_level2.evt modeM0/AS1A05_088T03_9000003042_20570cztM0_level2_quad_clean.evt
Size (bytes)448,764,48090,290,880
Size428.0 MB 86.1 MB
Events in quadrant A3,025,294585,454
Events in quadrant B3,107,798592,264
Events in quadrant C3,064,138570,092
Events in quadrant D3,971,454552,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129872
B0131192
C0129862
D0159112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217180.289529%
B6217240.386038%
C6217410.659482%
D6217951.528068%

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 7457 6218 1 1 0.01% 0.02%
B 7457 6218 0 0 0.00% 0.00%
C 7457 6218 0 0 0.00% 0.00%
D 7457 6218 51 51 0.68% 0.82%

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 96 23141 143.71 778 763 155.7
A 0 226 6821 38.9 778 763 155.7
A 3 137 6286 35.47 778 763 155.7
B 0 197 25565 171.51 776 759 144.6
B 12 111 17571 116.24 776 759 144.6
B 11 111 15098 99.14 776 759 144.6
C 14 238 118836 668.41 754 761 176.6
C 9 54 6908 34.8 754 761 176.6
C 13 61 5198 25.12 754 761 176.6
D 5 222 473724 2605.32 753 733 181.5
D 1 20 232282 1275.41 753 733 181.5
D 1 52 196364 1077.57 753 733 181.5

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