ASTROSAT CZTI

Data Quality Report

Orbit 41505

Creation date: 2024-06-27T22:29:53.409413
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_035T02_9000005676_41505cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41505cztM0_level2_quad_clean.evt
Size (bytes)300,320,64085,936,320
Size286.4 MB 82.0 MB
Events in quadrant A2,917,688578,107
Events in quadrant B2,224,701603,744
Events in quadrant C2,954,606545,261
Events in quadrant D2,632,586527,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117173
B0100302
C0117412
D0113012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49651072.155086%
B496530.060423%
C49652414.853978%
D4965671.349446%

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 7088 4966 98 98 1.38% 1.97%
B 7088 4966 0 0 0.00% 0.00%
C 7088 4966 236 236 3.33% 4.75%
D 7088 4966 70 70 0.99% 1.41%

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 479514 4260.95 551 540 112.4
A 15 190 274586 2437.91 551 540 112.4
A 2 79 21398 185.55 551 540 112.4
B 0 190 30331 280.3 555 541 106.3
B 12 111 13224 119.34 555 541 106.3
B 11 111 12116 108.91 555 541 106.3
C 0 10 624793 5004.86 536 541 124.7
C 15 214 205145 1640.39 536 541 124.7
C 14 254 17485 135.85 536 541 124.7
D 1 47 191912 1446.68 546 531 132.3
D 12 6 90513 680.18 546 531 132.3
D 2 153 75275 565.0 546 531 132.3

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