ASTROSAT CZTI

Data Quality Report

Orbit 36925

Creation date: 2024-06-27T21:33:14.944091
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_010T01_9000005246_36925cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36925cztM0_level2_quad_clean.evt
Size (bytes)2,726,766,720469,863,360
Size2.5 GB 448.1 MB
Events in quadrant A21,018,0123,371,570
Events in quadrant B11,641,6201,459,256
Events in quadrant C21,764,9653,309,237
Events in quadrant D25,227,8003,137,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08760
B08760
C08760
D08760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01390
B01390
C01390
D01390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08962510
B0601429
C0903649
D01043839

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42974810.188486%
B427282973369.586688%
C429742230.518918%
D4297413263.085587%

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 56890 42983 27 27 0.05% 0.06%
B 56890 42731 90 90 0.16% 0.21%
C 56890 42983 163 163 0.29% 0.38%
D 56890 42983 1172 1172 2.06% 2.73%

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 10 83 1438220 1471.95 4893 4796 973.8
A 12 189 361157 365.94 4893 4796 973.8
A 9 143 138760 137.56 4893 4796 973.8
B 12 243 4103299 13691.88 1580 1544 299.6
B 5 172 403331 1341.19 1580 1544 299.6
B 0 229 318655 1058.53 1580 1544 299.6
C 15 214 1799301 1613.21 4782 4816 1112.4
C 0 10 697137 622.39 4782 4816 1112.4
C 0 207 532697 474.56 4782 4816 1112.4
D 12 17 1714408 1489.25 4739 4614 1148.1
D 13 171 1624576 1411.01 4739 4614 1148.1
D 13 249 1539566 1336.96 4739 4614 1148.1

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