ASTROSAT CZTI

Data Quality Report

Orbit 37663

Creation date: 2024-06-27T21:42:48.553445
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_075T01_9000005342_37663cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37663cztM0_level2_quad_clean.evt
Size (bytes)425,056,32063,789,120
Size405.4 MB 60.8 MB
Events in quadrant A3,276,852384,703
Events in quadrant B2,930,542398,982
Events in quadrant C2,858,977397,599
Events in quadrant D3,445,590377,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131263
B0120192
C0115892
D0137382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53161242.332581%
B5316551.034612%
C5316130.244545%
D5316530.996990%

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 7169 5317 104 104 1.45% 1.96%
B 7168 5315 30 30 0.42% 0.56%
C 7168 5315 10 10 0.14% 0.19%
D 7168 5315 39 39 0.54% 0.73%

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 316566 2443.9 649 638 129.3
A 15 222 241508 1863.28 649 638 129.3
A 9 143 120223 925.06 649 638 129.3
B 5 172 147486 1187.65 652 634 123.6
B 0 230 84045 674.58 652 634 123.6
B 15 85 49773 397.41 652 634 123.6
C 15 214 245882 1664.44 641 645 147.3
C 0 10 68669 461.68 641 645 147.3
C 12 250 31015 206.12 641 645 147.3
D 12 227 551965 3623.58 639 624 152.2
D 12 233 147951 968.28 639 624 152.2
D 10 199 98542 643.55 639 624 152.2

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