ASTROSAT CZTI

Data Quality Report

Orbit 24597

Creation date: 2024-06-27T19:07:43.923695
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/AS1T03_189T01_9000003614_24597cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24597cztM0_level2_quad_clean.evt
Size (bytes)560,252,160115,741,440
Size534.3 MB 110.4 MB
Events in quadrant A3,789,816757,856
Events in quadrant B3,900,332767,242
Events in quadrant C4,016,361732,009
Events in quadrant D4,731,566705,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164785
B0166522
C0170572
D0194372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77961121.436634%
B77981882.410875%
C77982242.872531%
D77972833.629601%

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 8307 7799 0 0 0.00% 0.00%
B 8308 7800 2 2 0.02% 0.03%
C 8308 7800 8 8 0.10% 0.10%
D 8308 7800 202 202 2.43% 2.59%

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 13 254 10499 47.83 981 960 199.4
A 3 137 9333 41.99 981 960 199.4
A 0 226 8552 38.07 981 960 199.4
B 3 64 38429 198.83 977 950 188.5
B 7 202 25620 130.87 977 950 188.5
B 12 111 23992 122.24 977 950 188.5
C 14 238 148927 660.91 947 952 223.9
C 10 9 145677 646.4 947 952 223.9
C 7 247 18894 80.14 947 952 223.9
D 1 52 991369 4251.89 948 919 232.9
D 8 195 119989 511.15 948 919 232.9
D 2 234 37051 155.11 948 919 232.9

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