ASTROSAT CZTI

Data Quality Report

Orbit 20191004_A07_010T04_9000003220_level2

Creation date: 2025-12-04T12:54:40.013537
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/AS1A07_010T04_9000003220cztM0_level2.fits modeM0/AS1A07_010T04_9000003220cztM0_level2_quad_clean.evt
Size (bytes)368,176,320325,874,880
Size351.1 MB 310.8 MB
Events in quadrant A2,186,1221,754,303
Events in quadrant B2,222,2742,007,565
Events in quadrant C2,303,4401,914,334
Events in quadrant D1,848,7021,605,895

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01029420
B0809160
C0782660
D01350750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37656383310.178989%
B376564361.157850%
C376564551.208307%
D37656567215.062673%

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 45281 37652 0 0 0.00% 0.00%
B 45281 37656 0 0 0.00% 0.00%
C 45281 37656 0 0 0.00% 0.00%
D 45281 37648 0 0 0.00% 0.00%

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 0 29 2011 10.37 569 535 142.3
A 7 110 1794 8.85 569 535 142.3
A 0 30 1597 7.46 569 535 142.3
B 2 9 1747 10.17 588 563 116.5
B 14 254 1469 7.78 588 563 116.5
B 3 17 1464 7.74 588 563 116.5
C 3 234 1606 6.63 608 571 156.2
C 3 126 1574 6.42 608 571 156.2
C 12 241 1560 6.33 608 571 156.2
D 6 231 1370 6.3 527 480 141.3
D 10 189 1334 6.04 527 480 141.3
D 7 3 1332 6.03 527 480 141.3

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