ASTROSAT CZTI

Data Quality Report

Orbit 28556

Creation date: 2024-06-27T19:53:17.768300
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/AS1A10_102T07_9000004102_28556cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28556cztM0_level2_quad_clean.evt
Size (bytes)489,234,24085,682,880
Size466.6 MB 81.7 MB
Events in quadrant A3,432,417547,253
Events in quadrant B3,546,302552,021
Events in quadrant C3,423,262521,752
Events in quadrant D3,969,538516,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142902
B0147102
C0144272
D0158782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6560941.432927%
B65601301.981707%
C65601402.134146%
D6560911.387195%

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 7655 6560 1 1 0.01% 0.02%
B 7655 6560 11 11 0.14% 0.17%
C 7655 6560 3 3 0.04% 0.05%
D 7655 6560 31 31 0.40% 0.47%

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 15 174 55886 316.52 873 857 173.9
A 13 254 10013 52.66 873 857 173.9
A 3 137 8287 42.74 873 857 173.9
B 4 171 98988 592.66 864 841 165.6
B 10 245 42446 251.23 864 841 165.6
B 12 111 20162 116.67 864 841 165.6
C 14 238 133130 686.43 824 829 192.7
C 7 247 36278 183.92 824 829 192.7
C 3 233 28351 142.79 824 829 192.7
D 1 52 450650 2262.44 839 820 198.8
D 8 195 278214 1395.16 839 820 198.8
D 2 250 29246 142.97 839 820 198.8

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