ASTROSAT CZTI

Data Quality Report

Orbit 15472

Creation date: 2024-06-27T17:08:59.240738
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/AS1A04_203T01_9000002284_15472cztM0_level2.evt modeM0/AS1A04_203T01_9000002284_15472cztM0_level2_quad_clean.evt
Size (bytes)548,942,40069,344,640
Size523.5 MB 66.1 MB
Events in quadrant A3,413,359430,697
Events in quadrant B3,457,290435,360
Events in quadrant C3,404,630411,416
Events in quadrant D5,925,934385,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139342
B0140431
C0137281
D0218191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6255711.135092%
B6255741.183054%
C6255841.342926%
D625578612.565947%

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 7576 6256 1 1 0.01% 0.02%
B 7576 6257 0 0 0.00% 0.00%
C 7576 6256 1 1 0.01% 0.02%
D 7576 6257 625 625 8.25% 9.99%

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 9 143 16073 86.43 879 864 176.0
A 7 16 15204 81.49 879 864 176.0
A 0 226 7801 39.42 879 864 176.0
B 0 230 26831 161.42 866 849 161.0
B 12 111 18275 108.26 866 849 161.0
B 11 111 15613 91.73 866 849 161.0
C 14 238 128519 672.8 824 832 189.8
C 3 233 41367 213.59 824 832 189.8
C 10 22 18613 93.69 824 832 189.8
D 1 52 2111085 10654.78 813 791 198.1
D 2 33 306845 1545.25 813 791 198.1
D 12 221 299316 1507.24 813 791 198.1

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