ASTROSAT CZTI

Data Quality Report

Orbit 37293

Creation date: 2024-06-27T21:38:01.280029
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/AS1A10_103T07_9000005302_37293cztM0_level2.evt modeM0/AS1A10_103T07_9000005302_37293cztM0_level2_quad_clean.evt
Size (bytes)1,080,504,000222,183,360
Size1.0 GB 211.9 MB
Events in quadrant A7,252,5891,430,479
Events in quadrant B7,383,4391,457,760
Events in quadrant C8,851,6281,458,940
Events in quadrant D8,264,9491,391,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304925
B0310204
C0351944
D0343404

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14366450.313240%
B14366980.682166%
C143664513.139357%
D143662491.733259%

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 19744 14369 19 19 0.10% 0.13%
B 19744 14369 52 52 0.26% 0.36%
C 19744 14369 413 413 2.09% 2.87%
D 19744 14369 249 249 1.26% 1.73%

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 626066 1915.81 1639 1611 325.9
A 9 143 132432 401.36 1639 1611 325.9
A 13 248 42215 124.57 1639 1611 325.9
B 0 213 349023 1120.15 1628 1586 310.2
B 12 18 213091 681.9 1628 1586 310.2
B 0 221 211839 677.87 1628 1586 310.2
C 1 23 1285562 3484.75 1583 1597 368.5
C 15 214 596282 1614.01 1583 1597 368.5
C 0 10 477623 1291.96 1583 1597 368.5
D 2 249 723827 1877.79 1595 1554 384.6
D 10 199 653881 1695.94 1595 1554 384.6
D 12 17 285450 738.08 1595 1554 384.6

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