ASTROSAT CZTI

Data Quality Report

Orbit 09006

Creation date: 2024-06-27T15:40:01.765256
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/AS1C02_037T01_9000001252_09006cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_09006cztM0_level2_quad_clean.evt
Size (bytes)1,005,635,520160,513,920
Size959.0 MB 153.1 MB
Events in quadrant A7,421,2971,014,164
Events in quadrant B6,946,6791,008,871
Events in quadrant C5,694,5671,004,000
Events in quadrant D9,543,337965,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301163
B0287692
C0258972
D0366744

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125692411.917416%
B125693863.071048%
C12569840.668311%
D1256811489.134309%

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 13754 12571 16 16 0.12% 0.13%
B 13754 12571 132 132 0.96% 1.05%
C 13754 12571 0 0 0.00% 0.00%
D 13754 12571 956 956 6.95% 7.60%

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 8 5 1308751 4237.63 1506 1475 308.5
A 1 162 141883 455.14 1506 1475 308.5
A 5 16 62407 197.52 1506 1475 308.5
B 10 16 660233 2278.94 1502 1467 289.1
B 0 230 171612 588.6 1502 1467 289.1
B 0 214 167568 574.61 1502 1467 289.1
C 13 61 11121 28.18 1459 1465 342.6
C 14 238 4759 9.61 1459 1465 342.6
C 8 128 4339 8.39 1459 1465 342.6
D 1 52 2524285 7098.82 1418 1372 355.4
D 7 71 492273 1381.27 1418 1372 355.4
D 6 225 398610 1117.72 1418 1372 355.4

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