ASTROSAT CZTI

Data Quality Report

Orbit 20220510_A09_121T01_9000005136_level2

Creation date: 2022-05-14T18:18:28.076178
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/AS1A09_121T01_9000005136cztM0_level2_bc.evt modeM0/AS1A09_121T01_9000005136cztM0_level2_quad_clean.evt
Size (bytes)2,338,260,480729,097,920
Size2.2 GB 695.3 MB
Events in quadrant A13,451,7024,700,182
Events in quadrant B17,510,2754,685,427
Events in quadrant C16,215,9924,607,083
Events in quadrant D19,995,8034,421,650

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150080
B01337840
C01220590
D01397590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010960
B010960
C010960
D010960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534804780.893792%
B5348014932.791698%
C534809601.795064%
D5348016663.115183%

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 74004 53492 57 57 0.08% 0.11%
B 74004 53480 74 74 0.10% 0.14%
C 74004 53476 176 176 0.24% 0.33%
D 74004 53476 169 169 0.23% 0.32%

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 10 83 1297023 2101.85 2792 2747 615.8
A 15 237 965900 1564.12 2792 2747 615.8
A 7 48 206718 331.24 2792 2747 615.8
B 5 172 2504743 4551.32 2777 2716 549.7
B 5 255 1017797 1846.49 2777 2716 549.7
B 0 213 681977 1235.61 2777 2716 549.7
C 15 214 2154518 3465.12 2707 2689 621.0
C 1 23 1247843 2005.09 2707 2689 621.0
C 0 10 1100150 1767.25 2707 2689 621.0
D 8 195 1560111 2398.11 2735 2656 649.5
D 14 52 1424091 2188.67 2735 2656 649.5
D 13 249 1284885 1974.33 2735 2656 649.5

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