ASTROSAT CZTI

Data Quality Report

Orbit 38693

Creation date: 2024-06-27T21:55:12.033492
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/AS1A12_054T01_9000005392_38693cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38693cztM0_level2_quad_clean.evt
Size (bytes)431,470,08095,388,480
Size411.5 MB 91.0 MB
Events in quadrant A2,875,769671,537
Events in quadrant B2,869,880682,372
Events in quadrant C2,925,193644,656
Events in quadrant D6,890,858520,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116863
B0118612
C0118552
D0241172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5277170.322153%
B52771011.913966%
C5277320.606405%
D527790617.168846%

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 7341 5279 7 7 0.10% 0.13%
B 7341 5279 52 52 0.71% 0.99%
C 7341 5279 31 31 0.42% 0.59%
D 7341 5279 943 943 12.85% 17.86%

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 400984 3214.88 621 611 124.5
A 13 248 52646 417.83 621 611 124.5
A 13 6 9398 70.56 621 611 124.5
B 4 171 397569 3392.84 616 600 117.0
B 4 251 18551 153.42 616 600 117.0
B 12 111 14095 115.34 616 600 117.0
C 15 214 216588 1553.17 601 604 139.1
C 14 254 208229 1493.06 601 604 139.1
C 2 16 125596 898.83 601 604 139.1
D 2 16 3659588 25896.11 571 552 141.3
D 12 227 560876 3965.58 571 552 141.3
D 5 222 151609 1069.08 571 552 141.3

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