ASTROSAT CZTI

Data Quality Report

Orbit 21706

Creation date: 2024-06-27T18:31:24.038563
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_9000003214_21706cztM0_level2.evt modeM0/AS1A07_039T03_9000003214_21706cztM0_level2_quad_clean.evt
Size (bytes)1,392,436,800256,512,960
Size1.3 GB 244.6 MB
Events in quadrant A13,802,6991,682,520
Events in quadrant B7,032,6301,775,423
Events in quadrant C12,945,8811,669,195
Events in quadrant D7,451,1291,678,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051034150
B03000365
C04804380
D03160141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139364583.286452%
B139482151.541440%
C1395111047.913411%
D139582832.027511%

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 16071 13966 52 52 0.32% 0.37%
B 16071 13976 23 23 0.14% 0.16%
C 16071 13974 136 136 0.85% 0.97%
D 16071 13979 136 136 0.85% 0.97%

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 15 236 7474077 22799.68 1636 1598 327.7
A 13 254 26063 74.65 1636 1598 327.7
A 0 226 14064 38.04 1636 1598 327.7
B 3 64 343209 1091.55 1655 1611 312.9
B 0 230 80829 253.14 1655 1611 312.9
B 0 229 52380 162.23 1655 1611 312.9
C 8 208 6557401 17945.71 1572 1579 365.3
C 14 238 243976 663.53 1572 1579 365.3
C 10 22 15678 38.59 1572 1579 365.3
D 12 235 571211 1465.02 1609 1561 388.8
D 13 104 275768 705.2 1609 1561 388.8
D 2 136 209187 533.97 1609 1561 388.8

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