ASTROSAT CZTI

Data Quality Report

Orbit 50203

Creation date: 2025-01-10T18:59:52.875595
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/AS1C09_003T01_9000006442_50203cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50203cztM0_level2_quad_clean.evt
Size (bytes)964,748,16070,352,640
Size920.1 MB 67.1 MB
Events in quadrant A6,144,686578,994
Events in quadrant B3,827,163682,017
Events in quadrant C14,054,34562,152
Events in quadrant D11,190,598359,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227171
B0157691
C0460491
D0377244

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639974811.689326%
B64002013.140625%
C6400585291.437500%
D6399272142.522269%

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 7534 6399 622 622 8.26% 9.72%
B 7535 6400 88 88 1.17% 1.38%
C 7534 6399 4580 4580 60.79% 71.57%
D 7534 6399 2630 2630 34.91% 41.10%

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 0 98 1217713 7398.08 652 638 164.5
A 10 253 505239 3067.26 652 638 164.5
A 12 250 355928 2159.66 652 638 164.5
B 5 172 223748 1575.67 681 660 141.6
B 4 206 164518 1157.33 681 660 141.6
B 3 249 108238 759.82 681 660 141.6
C 4 111 10914344 172590.09 220 219 63.2
C 15 197 383134 6055.21 220 219 63.2
C 4 110 356833 5639.3 220 219 63.2
D 7 61 2425053 15745.51 548 528 154.0
D 15 108 1487555 9657.15 548 528 154.0
D 15 185 840223 5453.2 548 528 154.0

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