ASTROSAT CZTI

Data Quality Report

Orbit 20220108_A11_037T01_9000004858_level2

Creation date: 2022-01-10T17:44:54.911573
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/AS1A11_037T01_9000004858cztM0_level2_bc.evt modeM0/AS1A11_037T01_9000004858cztM0_level2_quad_clean.evt
Size (bytes)2,194,948,800402,865,920
Size2.0 GB 384.2 MB
Events in quadrant A9,875,4742,019,093
Events in quadrant B11,459,4992,840,456
Events in quadrant C10,508,9732,789,945
Events in quadrant D32,343,8692,248,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01174680
B0855530
C0781590
D01738660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06860
B06860
C06820
D06860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01100
C01100
D01130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334261114733.348292%
B3346611363.394490%
C334574361.303165%
D334561154634.511000%

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 45827 32094 20 20 0.04% 0.06%
B 45827 33485 68 68 0.15% 0.20%
C 45827 33483 36 36 0.08% 0.11%
D 45827 33476 530 530 1.16% 1.58%

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 15 169 4685157 16178.2 1302 1281 289.5
A 13 6 57294 193.47 1302 1281 289.5
A 14 238 53046 178.8 1302 1281 289.5
B 5 172 2674148 7514.32 1839 1804 355.6
B 0 190 482539 1351.77 1839 1804 355.6
B 0 182 369594 1034.18 1839 1804 355.6
C 15 214 1372078 3338.27 1813 1804 410.5
C 3 233 822031 1998.24 1813 1804 410.5
C 0 10 647946 1574.14 1813 1804 410.5
D 12 33 17108680 45649.88 1530 1485 374.7
D 8 195 4244078 11321.19 1530 1485 374.7
D 2 250 1017385 2710.89 1530 1485 374.7

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