ASTROSAT CZTI

Data Quality Report

Orbit 38972

Creation date: 2024-06-27T21:58:49.999690
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/AS1A12_057T01_9000005418_38972cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38972cztM0_level2_quad_clean.evt
Size (bytes)317,352,96088,320,960
Size302.7 MB 84.2 MB
Events in quadrant A2,637,744596,906
Events in quadrant B2,404,547612,692
Events in quadrant C3,288,549559,609
Events in quadrant D3,008,565538,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111703
B0108342
C0132892
D0128472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523290.172018%
B5232170.324924%
C52322835.409021%
D5232971.853976%

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 6965 5233 8 8 0.11% 0.15%
B 6965 5233 8 8 0.11% 0.15%
C 6965 5233 268 268 3.85% 5.12%
D 6965 5232 90 90 1.29% 1.72%

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 404663 3467.31 570 560 116.5
A 13 6 14218 117.19 570 560 116.5
A 13 254 9547 77.11 570 560 116.5
B 5 172 115164 1039.9 570 556 110.2
B 0 230 21634 191.25 570 556 110.2
B 12 111 13884 120.93 570 556 110.2
C 14 254 925151 7282.84 546 551 127.0
C 15 214 225314 1770.4 546 551 127.0
C 13 61 3578 23.84 546 551 127.0
D 12 227 436549 3224.82 554 538 135.2
D 2 249 116211 855.54 554 538 135.2
D 2 250 86395 635.02 554 538 135.2

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