ASTROSAT CZTI

Data Quality Report

Orbit 08220

Creation date: 2024-06-27T15:29:36.538627
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_041T01_9000001136_08220cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08220cztM0_level2_quad_clean.evt
Size (bytes)508,904,64097,355,520
Size485.3 MB 92.8 MB
Events in quadrant A3,566,512624,695
Events in quadrant B3,792,932629,791
Events in quadrant C3,672,665612,639
Events in quadrant D3,904,728593,676

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149223
B0156262
C0153592
D0161492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70071562.226345%
B70071702.426145%
C70071181.684030%
D70072032.897103%

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 9422 7007 1 1 0.01% 0.01%
B 9422 7007 12 12 0.13% 0.17%
C 9422 7007 0 0 0.00% 0.00%
D 9422 7007 82 82 0.87% 1.17%

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 15 10814 53.16 922 903 186.4
A 0 226 8660 41.61 922 903 186.4
A 12 194 8152 38.88 922 903 186.4
B 4 81 78883 450.07 919 901 173.3
B 0 214 78595 448.41 919 901 173.3
B 10 16 29870 167.19 919 901 173.3
C 9 68 214733 1049.98 883 888 203.7
C 14 67 9350 41.55 883 888 203.7
C 13 61 6823 29.14 883 888 203.7
D 12 233 345054 1441.78 883 864 238.7
D 1 52 71395 295.45 883 864 238.7
D 13 105 70239 290.6 883 864 238.7

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