ASTROSAT CZTI

Data Quality Report

Orbit 09000

Creation date: 2024-06-27T15:39:56.846124
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_09000cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_09000cztM0_level2_quad_clean.evt
Size (bytes)494,156,16069,986,880
Size471.3 MB 66.7 MB
Events in quadrant A3,961,365430,011
Events in quadrant B3,628,902421,332
Events in quadrant C3,096,051409,704
Events in quadrant D3,836,151402,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159833
B0147192
C0134092
D0154372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526691.057309%
B65261522.329145%
C6526330.505670%
D65261081.654919%

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 7641 6526 1 1 0.01% 0.02%
B 7641 6527 65 65 0.85% 1.00%
C 7641 6527 0 0 0.00% 0.00%
D 7641 6527 76 76 0.99% 1.16%

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 672008 3953.05 828 811 169.8
A 3 1 76894 448.09 828 811 169.8
A 15 174 13889 77.02 828 811 169.8
B 10 16 296719 1884.58 824 805 157.0
B 0 219 28108 173.88 824 805 157.0
B 0 214 26415 163.1 824 805 157.0
C 9 68 10994 55.77 790 795 182.9
C 13 61 6019 28.57 790 795 182.9
C 14 67 3500 14.79 790 795 182.9
D 10 253 248161 1160.36 784 768 213.2
D 1 52 234859 1097.97 784 768 213.2
D 12 233 97779 455.01 784 768 213.2

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