ASTROSAT CZTI

Data Quality Report

Orbit 20231028_A13_003T01_9000005902_level2

Creation date: 2023-11-02T14:44:12.045225
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/AS1A13_003T01_9000005902cztM0_level2.fits modeM0/AS1A13_003T01_9000005902cztM0_level2_quad_clean.evt
Size (bytes)1,697,667,8401,752,606,720
Size1.6 GB 1.6 GB
Events in quadrant A10,264,24210,868,125
Events in quadrant B10,028,43611,087,073
Events in quadrant C9,679,9869,564,752
Events in quadrant D8,077,9048,225,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039440
B039440
C039440
D039440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06482950
B04857060
C06151580
D07282560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194589111965.753665%
B19460490534.652011%
C1945712499812.847752%
D1945903007515.455573%

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 220975 194565 0 0 0.00% 0.00%
B 220975 194564 0 0 0.00% 0.00%
C 220975 193730 0 0 0.00% 0.00%
D 220975 193743 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 0 29 8349 8.83 2679 2508 661.3
A 7 110 8272 8.72 2679 2508 661.3
A 15 236 8098 8.45 2679 2508 661.3
B 2 9 8811 12.02 2656 2523 523.2
B 3 17 7443 9.4 2656 2523 523.2
B 2 8 7110 8.77 2656 2523 523.2
C 3 202 7642 8.01 2564 2384 656.7
C 1 81 7541 7.85 2564 2384 656.7
C 1 80 7502 7.79 2564 2384 656.7
D 6 67 6043 6.06 2350 2129 646.1
D 6 38 5949 5.91 2350 2129 646.1
D 10 189 5948 5.91 2350 2129 646.1

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