ASTROSAT CZTI

Data Quality Report

Orbit 51234

Creation date: 2025-03-19T07:13:41.023762
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/AS1C07_001T01_9000006454_51234cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51234cztM0_level2_quad_clean.evt
Size (bytes)568,146,24099,020,160
Size541.8 MB 94.4 MB
Events in quadrant A5,443,130635,425
Events in quadrant B6,302,554675,588
Events in quadrant C4,782,296629,224
Events in quadrant D3,978,734586,322

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210002
B0234315
C0189512
D0169012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67662343.458469%
B67656469.549150%
C67653284.848485%
D67652173.207687%

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 7901 6767 140 140 1.77% 2.07%
B 7899 6765 431 431 5.46% 6.37%
C 7900 6766 259 259 3.28% 3.83%
D 7900 6766 188 188 2.38% 2.78%

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 12 3 1278002 7393.45 694 678 172.8
A 9 160 508655 2940.29 694 678 172.8
A 8 26 258995 1495.2 694 678 172.8
B 5 185 1479116 10111.77 689 665 146.2
B 10 254 1134496 7754.77 689 665 146.2
B 8 128 172031 1172.05 689 665 146.2
C 12 247 826583 4377.83 678 671 188.7
C 4 12 723455 3831.19 678 671 188.7
C 0 145 100097 527.02 678 671 188.7
D 2 216 489240 2583.71 667 644 189.1
D 2 207 171304 902.45 667 644 189.1
D 10 172 169153 891.08 667 644 189.1

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