ASTROSAT CZTI

Data Quality Report

Orbit 09956

Creation date: 2024-06-27T15:52:54.581050
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/AS1G07_016T01_9000001420_09956cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09956cztM0_level2_quad_clean.evt
Size (bytes)114,459,84027,478,080
Size109.2 MB 26.2 MB
Events in quadrant A732,368186,613
Events in quadrant B776,228189,115
Events in quadrant C612,103184,413
Events in quadrant D1,248,362167,660

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0284

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320775
B0329758
C0287159
D04900194

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139920.142959%
B140690.640114%
C140200.000000%
D1376282.034884%

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 1431 1430 1 1 0.07% 0.07%
B 1431 1429 7 7 0.49% 0.49%
C 1431 1430 0 0 0.00% 0.00%
D 1430 1426 28 28 1.96% 1.96%

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 14 254 59894 1642.28 168 164 36.4
A 15 174 17353 472.61 168 164 36.4
A 13 14 6509 174.46 168 164 36.4
B 4 239 47087 1362.62 168 164 34.4
B 4 81 39058 1129.47 168 164 34.4
B 0 229 19331 556.6 168 164 34.4
C 13 61 1160 26.67 156 157 37.6
C 8 222 572 11.04 156 157 37.6
C 14 67 512 9.44 156 157 37.6
D 8 195 200055 5015.78 154 149 39.9
D 2 152 181467 4549.39 154 149 39.9
D 12 233 99357 2489.2 154 149 39.9

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