ASTROSAT CZTI

Data Quality Report

Orbit 20210513_C05_019T04_9000004376_level2

Creation date: 2025-12-25T14:38:57.619080
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/AS1C05_019T04_9000004376cztM0_level2.fits modeM0/AS1C05_019T04_9000004376cztM0_level2_quad_clean.evt
Size (bytes)947,629,4401,033,341,120
Size903.7 MB 985.5 MB
Events in quadrant A5,838,0986,458,943
Events in quadrant B5,508,5726,386,217
Events in quadrant C5,746,3986,220,044
Events in quadrant D4,983,4645,611,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019680
B019680
C019680
D019680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140630
B02971860
C02092000
D02443850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9659817251.785751%
B9659819882.058014%
C9659822082.285762%
D9659840964.240253%

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 112188 96582 0 0 0.00% 0.00%
B 112188 96580 0 0 0.00% 0.00%
C 112188 96579 0 0 0.00% 0.00%
D 112188 96546 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 4856 9.26 1522 1435 369.3
A 7 110 4677 8.78 1522 1435 369.3
A 9 19 4389 8.0 1522 1435 369.3
B 2 9 4537 11.07 1458 1395 283.8
B 2 8 3720 8.19 1458 1395 283.8
B 3 80 3713 8.17 1458 1395 283.8
C 12 241 3952 6.56 1520 1430 384.6
C 3 187 3916 6.46 1520 1430 384.6
C 9 209 3900 6.42 1520 1430 384.6
D 15 46 3844 6.73 1424 1300 378.2
D 4 246 3766 6.52 1424 1300 378.2
D 10 189 3522 5.88 1424 1300 378.2

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