ASTROSAT CZTI

Data Quality Report

Orbit 39116

Creation date: 2024-06-27T22:00:37.843306
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/AS1T05_067T01_9000005432_39116cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39116cztM0_level2_quad_clean.evt
Size (bytes)249,526,08062,671,680
Size238.0 MB 59.8 MB
Events in quadrant A2,054,860436,780
Events in quadrant B1,712,646436,347
Events in quadrant C2,319,282393,034
Events in quadrant D2,858,322367,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106422156
B098672234
C0128093586
D0140982970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010125
B010218
C010121
D010022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183
B0183
C0184
D0192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3796100.263435%
B377520.052980%
C362960.165335%
D3681371.005162%

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 6959 4127 7 7 0.10% 0.17%
B 6962 4118 0 0 0.00% 0.00%
C 6968 3963 3 3 0.04% 0.08%
D 6958 4038 31 31 0.45% 0.77%

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 330814 3779.63 429 421 87.4
A 13 248 57815 656.58 429 421 87.4
A 13 254 8392 91.19 429 421 87.4
B 5 184 14279 168.74 424 414 82.2
B 0 199 13179 155.35 424 414 82.2
B 12 111 10019 116.89 424 414 82.2
C 15 208 617603 6720.7 389 392 91.8
C 15 214 157583 1711.62 389 392 91.8
C 9 187 17687 188.32 389 392 91.8
D 12 235 862300 8938.86 394 384 96.4
D 5 222 176497 1826.45 394 384 96.4
D 2 249 92445 954.76 394 384 96.4

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