ASTROSAT CZTI

Data Quality Report

Orbit 37702

Creation date: 2024-06-27T21:43:19.418283
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/AS1A11_075T01_9000005342_37702cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37702cztM0_level2_quad_clean.evt
Size (bytes)887,042,880131,008,320
Size846.0 MB 124.9 MB
Events in quadrant A6,139,581811,425
Events in quadrant B5,610,630832,904
Events in quadrant C5,289,563837,063
Events in quadrant D9,115,656759,186

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248564
B0236363
C0220593
D0344013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10493970.924426%
B104931871.782140%
C10493350.333556%
D104937276.928428%

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 14489 10495 22 22 0.15% 0.21%
B 14490 10493 116 116 0.80% 1.11%
C 14490 10493 35 35 0.24% 0.33%
D 14490 10493 641 641 4.42% 6.11%

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 15 222 825772 3432.58 1194 1170 240.2
A 10 83 525735 2183.61 1194 1170 240.2
A 9 143 100733 414.45 1194 1170 240.2
B 5 172 548013 2408.0 1186 1152 227.1
B 0 189 123397 538.28 1186 1152 227.1
B 0 230 65763 284.5 1186 1152 227.1
C 15 214 468997 1731.11 1175 1184 270.2
C 0 10 145870 535.4 1175 1184 270.2
C 14 254 80017 291.72 1175 1184 270.2
D 12 227 3107201 11136.07 1146 1116 278.9
D 2 250 887817 3179.04 1146 1116 278.9
D 13 249 227232 810.68 1146 1116 278.9

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