ASTROSAT CZTI

Data Quality Report

Orbit 20160322_T01_051T01_9000000390_level2

Creation date: 2025-10-28T19:52:16.073677
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/AS1T01_051T01_9000000390cztM0_level2.fits modeM0/AS1T01_051T01_9000000390cztM0_level2_quad_clean.evt
Size (bytes)324,417,600516,775,680
Size309.4 MB 492.8 MB
Events in quadrant A1,912,7763,368,688
Events in quadrant B1,869,3563,442,364
Events in quadrant C1,904,1343,339,259
Events in quadrant D1,572,2262,937,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764320
B0799020
C0793880
D0994950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07560
B07560
C07560
D07560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A373566291.683799%
B373566741.804262%
C373564551.218010%
D3735617974.810472%

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 40390 37355 0 0 0.00% 0.00%
B 40390 37356 0 0 0.00% 0.00%
C 40390 37356 0 0 0.00% 0.00%
D 40390 37353 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 14 188 1885 10.92 495 463 130.2
A 0 29 1786 10.16 495 463 130.2
A 14 204 1714 9.61 495 463 130.2
B 2 9 1638 12.18 492 470 95.9
B 12 226 1402 9.72 492 470 95.9
B 5 128 1387 9.56 492 470 95.9
C 7 111 1324 6.27 503 464 137.2
C 2 191 1305 6.13 503 464 137.2
C 1 80 1302 6.11 503 464 137.2
D 4 160 1205 6.27 450 407 127.3
D 11 82 1195 6.19 450 407 127.3
D 6 231 1168 5.98 450 407 127.3

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