ASTROSAT CZTI

Data Quality Report

Orbit 43976

Creation date: 2024-06-27T22:57:52.242188
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/AS1A13_065T06_9000005924_43976cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43976cztM0_level2_quad_clean.evt
Size (bytes)565,617,60098,066,880
Size539.4 MB 93.5 MB
Events in quadrant A8,759,140539,455
Events in quadrant B3,310,042700,063
Events in quadrant C2,908,281680,344
Events in quadrant D5,463,395602,784

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303661
B0140821
C0132311
D0208221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6398169226.445764%
B63981322.063145%
C6399310.484451%
D63994056.329114%

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 7278 6399 1254 1254 17.23% 19.60%
B 7278 6399 61 61 0.84% 0.95%
C 7279 6400 12 12 0.16% 0.19%
D 7279 6400 359 359 4.93% 5.61%

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 15 223 4302153 32907.71 630 618 130.7
A 10 83 980502 7496.33 630 618 130.7
A 15 222 612434 4680.53 630 618 130.7
B 5 172 280726 1935.58 713 690 144.7
B 0 155 66470 454.67 713 690 144.7
B 0 200 38271 259.76 713 690 144.7
C 14 254 113332 678.14 702 705 166.1
C 3 233 21758 126.76 702 705 166.1
C 15 157 13174 75.08 702 705 166.1
D 12 17 1170557 6668.73 688 667 175.4
D 1 52 586229 3337.88 688 667 175.4
D 4 235 210648 1196.96 688 667 175.4

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