ASTROSAT CZTI

Data Quality Report

Orbit 25997

Creation date: 2024-06-27T19:23:40.109356
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_068T01_9000003760_25997cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25997cztM0_level2_quad_clean.evt
Size (bytes)530,095,680119,376,000
Size505.5 MB 113.8 MB
Events in quadrant A3,320,242839,669
Events in quadrant B3,513,263824,221
Events in quadrant C3,252,762781,106
Events in quadrant D5,553,296743,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137360
B0142750
C0135430
D0208830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6119991.617911%
B61191472.402353%
C61201302.124183%
D612061610.065359%

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 7444 6120 5 5 0.07% 0.08%
B 7444 6120 56 56 0.75% 0.92%
C 7445 6121 0 0 0.00% 0.00%
D 7445 6121 430 430 5.78% 7.02%

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 4 208 12336 67.87 857 844 169.3
A 13 254 9137 48.98 857 844 169.3
A 0 226 7529 39.48 857 844 169.3
B 10 245 227328 1468.14 827 809 154.3
B 0 190 34381 217.59 827 809 154.3
B 12 111 17987 111.34 827 809 154.3
C 14 238 130780 707.85 797 803 183.6
C 3 233 8528 42.07 797 803 183.6
C 0 207 8200 40.28 797 803 183.6
D 1 52 2299866 12291.13 790 772 187.1
D 7 80 233255 1242.87 790 772 187.1
D 2 234 22091 113.97 790 772 187.1

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