ASTROSAT CZTI

Data Quality Report

Orbit 37939

Creation date: 2024-06-27T21:46:23.516851
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/AS1A11_082T01_9000005356_37939cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37939cztM0_level2_quad_clean.evt
Size (bytes)434,082,24059,564,160
Size414.0 MB 56.8 MB
Events in quadrant A2,972,179366,588
Events in quadrant B2,566,348378,676
Events in quadrant C2,792,554374,239
Events in quadrant D4,465,067322,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117763
B0107052
C0111782
D0166982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5151120.232964%
B5151110.213551%
C5151230.446515%
D51513085.979421%

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 7124 5152 6 6 0.08% 0.12%
B 7124 5152 6 6 0.08% 0.12%
C 7124 5152 13 13 0.18% 0.25%
D 7124 5152 302 302 4.24% 5.86%

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 353643 2835.69 624 612 124.5
A 15 222 155315 1242.64 624 612 124.5
A 14 239 21767 169.93 624 612 124.5
B 5 172 52882 452.24 623 608 115.6
B 0 230 36137 307.37 623 608 115.6
B 12 111 13751 113.7 623 608 115.6
C 15 214 221728 1570.28 618 622 140.8
C 0 10 134266 949.13 618 622 140.8
C 14 254 9027 59.69 618 622 140.8
D 1 52 1166711 7978.61 604 589 146.2
D 5 32 292967 2000.45 604 589 146.2
D 2 249 219860 1500.25 604 589 146.2

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