ASTROSAT CZTI

Data Quality Report

Orbit 35801

Creation date: 2022-05-13T09:38:28.946549
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/AS1A09_029T10_9000005140_35801cztM0_level2.evt modeM0/AS1A09_029T10_9000005140_35801cztM0_level2_quad_clean.evt
Size (bytes)448,211,52070,162,560
Size427.4 MB 66.9 MB
Events in quadrant A2,555,823453,556
Events in quadrant B3,602,901448,834
Events in quadrant C3,713,865427,438
Events in quadrant D3,331,351413,124

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111723
B0142372
C0146412
D0137212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544650.091811%
B54462394.388542%
C54461973.617334%
D54462344.296732%

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 7118 5447 0 0 0.00% 0.00%
B 7118 5447 186 186 2.61% 3.41%
C 7118 5447 200 200 2.81% 3.67%
D 7118 5447 227 227 3.19% 4.17%

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 10 83 160051 1274.42 616 604 125.1
A 13 6 13942 106.61 616 604 125.1
A 3 137 6585 47.8 616 604 125.1
B 5 172 693619 5941.08 604 588 116.7
B 5 255 192587 1645.93 604 588 116.7
B 0 213 148894 1271.37 604 588 116.7
C 0 207 692436 5116.54 581 585 135.2
C 0 10 427225 3155.19 581 585 135.2
C 15 214 225957 1666.73 581 585 135.2
D 13 249 762439 5301.77 581 565 143.7
D 2 250 114154 790.45 581 565 143.7
D 10 199 52522 361.56 581 565 143.7

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