ASTROSAT CZTI

Data Quality Report

Orbit 22425

Creation date: 2024-06-27T18:41:12.250720
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/AS1T03_149T05_9000003324_22425cztM0_level2.evt modeM0/AS1T03_149T05_9000003324_22425cztM0_level2_quad_clean.evt
Size (bytes)316,995,84060,978,240
Size302.3 MB 58.2 MB
Events in quadrant A2,249,419381,602
Events in quadrant B2,491,021388,699
Events in quadrant C2,295,085368,521
Events in quadrant D2,231,448364,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099471
B0104241
C099751
D0100641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A488590.184237%
B4885300.614125%
C4885641.310133%
D4885150.307062%

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 5700 4886 0 0 0.00% 0.00%
B 5700 4886 2 2 0.04% 0.04%
C 5700 4886 0 0 0.00% 0.00%
D 5700 4886 6 6 0.11% 0.12%

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 15 174 13545 109.84 579 566 118.2
A 13 254 7344 57.36 579 566 118.2
A 3 1 5119 38.53 579 566 118.2
B 0 244 209942 1897.14 578 563 110.4
B 12 111 13416 116.46 578 563 110.4
B 11 111 12076 104.32 578 563 110.4
C 14 238 88372 655.71 564 565 133.9
C 13 61 3860 24.61 564 565 133.9
C 1 16 3475 21.73 564 565 133.9
D 13 172 29310 208.03 568 549 138.3
D 2 234 20332 143.09 568 549 138.3
D 12 218 12432 85.95 568 549 138.3

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