ASTROSAT CZTI

Data Quality Report

Orbit 50971

Creation date: 2025-03-01T14:58:37.611728
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_001T02_9000006452_50971cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50971cztM0_level2_quad_clean.evt
Size (bytes)658,848,96087,186,240
Size628.3 MB 83.1 MB
Events in quadrant A6,935,253518,441
Events in quadrant B3,921,135669,552
Events in quadrant C5,293,963563,092
Events in quadrant D7,743,013443,089

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249481
B0162441
C0201101
D0274801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6392126319.759074%
B63921722.690864%
C63925128.010013%
D6393151523.697794%

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 7522 6393 1120 1120 14.89% 17.52%
B 7522 6393 90 90 1.20% 1.41%
C 7522 6393 474 474 6.30% 7.41%
D 7523 6394 1448 1448 19.25% 22.65%

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 14 254 1873302 12013.32 611 594 155.9
A 4 249 1211204 7766.0 611 594 155.9
A 12 80 478390 3065.04 611 594 155.9
B 4 81 612953 4318.32 666 644 141.8
B 4 206 268733 1890.7 666 644 141.8
B 8 128 193246 1358.33 666 644 141.8
C 15 147 1324114 7366.45 634 627 179.7
C 4 12 247989 1376.8 634 627 179.7
C 0 177 170168 943.66 634 627 179.7
D 8 176 4615970 28249.4 579 560 163.4
D 14 178 246092 1502.82 579 560 163.4
D 2 249 127500 776.96 579 560 163.4

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