ASTROSAT CZTI

Data Quality Report

Orbit 20191003_A07_039T03_9000003214_level2

Creation date: 2025-12-04T11:50:11.292253
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/AS1A07_039T03_9000003214cztM0_level2.fits modeM0/AS1A07_039T03_9000003214cztM0_level2_quad_clean.evt
Size (bytes)318,110,400412,525,440
Size303.4 MB 393.4 MB
Events in quadrant A1,882,1942,600,166
Events in quadrant B1,903,6382,728,784
Events in quadrant C1,885,2382,504,645
Events in quadrant D1,681,1502,379,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01175170
B0715860
C01099930
D0752960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3315818935.709029%
B331913641.096683%
C3317920616.211760%
D331974281.289273%

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 40273 33203 0 0 0.00% 0.00%
B 40273 33223 0 0 0.00% 0.00%
C 40273 33214 0 0 0.00% 0.00%
D 40273 33226 0 0 0.00% 0.00%

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 29 1823 11.32 489 461 120.3
A 7 110 1572 9.24 489 461 120.3
A 0 30 1419 7.97 489 461 120.3
B 2 9 1517 10.39 503 481 99.7
B 2 8 1274 7.96 503 481 99.7
B 14 254 1269 7.91 503 481 99.7
C 1 81 1421 7.44 497 467 128.2
C 1 80 1398 7.26 497 467 128.2
C 3 234 1307 6.55 497 467 128.2
D 10 189 1215 6.05 479 435 129.0
D 3 14 1199 5.92 479 435 129.0
D 7 3 1198 5.92 479 435 129.0

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