ASTROSAT CZTI

Data Quality Report

Orbit 19448

Creation date: 2024-06-27T18:03:00.863593
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/AS1A05_221T01_9000002888_19448cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19448cztM0_level2_quad_clean.evt
Size (bytes)1,068,073,920178,364,160
Size1018.6 MB 170.1 MB
Events in quadrant A6,743,8341,124,298
Events in quadrant B6,902,1781,140,332
Events in quadrant C6,732,4151,116,131
Events in quadrant D11,006,2241,038,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030620
B030614
C030618
D030614

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0171
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310881565
B0318841964
C0308371544
D0488356780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14328720.502513%
B142641280.897364%
C143381441.004324%
D139588896.369107%

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 16739 14697 14 14 0.08% 0.10%
B 16740 14654 25 25 0.15% 0.17%
C 16740 14736 0 0 0.00% 0.00%
D 16740 14210 706 706 4.22% 4.97%

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 12 96 72542 204.82 1704 1667 346.0
A 11 29 69890 197.16 1704 1667 346.0
A 9 143 23682 63.62 1704 1667 346.0
B 7 220 120583 368.59 1687 1644 322.7
B 0 198 44717 133.48 1687 1644 322.7
B 12 111 39634 117.73 1687 1644 322.7
C 14 238 255521 653.9 1649 1661 388.2
C 9 221 41872 103.58 1649 1661 388.2
C 13 61 11478 25.29 1649 1661 388.2
D 7 238 4323741 11098.24 1587 1541 389.4
D 1 52 548814 1405.25 1587 1541 389.4
D 5 222 100533 254.18 1587 1541 389.4

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