ASTROSAT CZTI

Data Quality Report

Orbit 50159

Creation date: 2025-01-05T22:07:17.605017
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/AS1C09_003T01_9000006442_50159cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50159cztM0_level2_quad_clean.evt
Size (bytes)991,546,56067,956,480
Size945.6 MB 64.8 MB
Events in quadrant A8,336,202536,418
Events in quadrant B4,171,445618,132
Events in quadrant C10,519,359326,038
Events in quadrant D13,207,121151,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290667
B0165851
C0354921
D0434081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609592815.225595%
B60954066.661198%
C6095297848.859721%
D6095459775.422477%

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 7230 6095 843 843 11.66% 13.83%
B 7230 6095 240 240 3.32% 3.94%
C 7229 6094 2631 2631 36.40% 43.17%
D 7229 6094 4222 4222 58.40% 69.28%

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 6 250 1883932 11966.9 618 602 157.4
A 9 191 1560392 9911.09 618 602 157.4
A 0 98 528635 3355.18 618 602 157.4
B 5 185 808960 6177.87 627 607 130.8
B 3 249 159003 1210.55 627 607 130.8
B 4 170 154184 1173.72 627 607 130.8
C 4 111 2959525 22054.22 488 485 134.2
C 15 213 1180281 8793.22 488 485 134.2
C 15 147 763599 5687.62 488 485 134.2
D 15 142 2560926 23200.38 373 359 110.4
D 15 185 1306021 11830.14 373 359 110.4
D 12 6 1283878 11629.51 373 359 110.4

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