ASTROSAT CZTI

Data Quality Report

Orbit 12076

Creation date: 2024-06-27T16:21:57.085828
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/AS1A04_130T01_9000001792_12076cztM0_level2.evt modeM0/AS1A04_130T01_9000001792_12076cztM0_level2_quad_clean.evt
Size (bytes)677,030,400112,000,320
Size645.7 MB 106.8 MB
Events in quadrant A4,271,434713,705
Events in quadrant B6,093,415693,352
Events in quadrant C4,053,084717,998
Events in quadrant D5,518,451684,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184143
B0237962
C0177102
D0217962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83861251.490580%
B83866758.049130%
C8386400.476985%
D83862793.326974%

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 8872 8388 10 10 0.11% 0.12%
B 8872 8389 345 345 3.89% 4.11%
C 8872 8389 1 1 0.01% 0.01%
D 8872 8389 154 154 1.74% 1.84%

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 3 1 113911 541.68 1017 992 208.5
A 13 251 60617 286.03 1017 992 208.5
A 1 162 58368 275.24 1017 992 208.5
B 4 239 1446304 7534.6 996 971 191.8
B 0 231 208207 1080.33 996 971 191.8
B 15 204 205102 1064.15 996 971 191.8
C 8 208 166633 716.44 993 998 231.2
C 14 234 9972 38.82 993 998 231.2
C 13 61 7176 26.72 993 998 231.2
D 1 52 1142534 4766.25 983 952 239.5
D 8 195 291345 1212.43 983 952 239.5
D 13 249 122384 506.99 983 952 239.5

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