ASTROSAT CZTI

Data Quality Report

Orbit 34728

Creation date: 2022-03-03T09:56:37.269427
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/AS1C07_001T01_9000004982_34728cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34728cztM0_level2_quad_clean.evt
Size (bytes)1,160,461,440222,094,080
Size1.1 GB 211.8 MB
Events in quadrant A8,450,4041,481,016
Events in quadrant B6,773,5911,525,899
Events in quadrant C6,695,3551,485,931
Events in quadrant D12,354,2661,341,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331103
B0280072
C0272102
D0457842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129294493.472813%
B129291070.827597%
C12929660.510480%
D129299987.719081%

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 19300 12932 358 358 1.85% 2.77%
B 19300 12932 60 60 0.31% 0.46%
C 19300 12932 51 51 0.26% 0.39%
D 19300 12932 865 865 4.48% 6.69%

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 15 169 2188331 7218.97 1542 1515 302.9
A 7 48 118051 384.7 1542 1515 302.9
A 10 83 85991 278.86 1542 1515 302.9
B 5 172 504155 1775.2 1536 1499 283.2
B 5 255 71969 248.88 1536 1499 283.2
B 0 155 36958 125.23 1536 1499 283.2
C 15 214 547445 1631.67 1484 1494 334.6
C 0 10 244739 726.98 1484 1494 334.6
C 14 67 78328 229.63 1484 1494 334.6
D 8 195 2157364 6258.56 1446 1410 344.5
D 2 250 1637680 4749.96 1446 1410 344.5
D 14 52 591839 1713.97 1446 1410 344.5

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