ASTROSAT CZTI

Data Quality Report

Orbit 50995

Creation date: 2025-03-03T06:52:49.404531
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/AS1C07_001T02_9000006452_50995cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50995cztM0_level2_quad_clean.evt
Size (bytes)1,492,796,160180,815,040
Size1.4 GB 172.4 MB
Events in quadrant A10,268,1761,240,333
Events in quadrant B10,933,2931,306,307
Events in quadrant C15,796,4931,009,895
Events in quadrant D17,168,734939,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404331
B0425491
C0566521
D0609241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141587064.986580%
B1415911277.959602%
C14159294720.813617%
D14159297621.018434%

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 14502 14158 601 601 4.14% 4.24%
B 14503 14159 764 764 5.27% 5.40%
C 14503 14159 2515 2515 17.34% 17.76%
D 14503 14159 2874 2874 19.82% 20.30%

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 8 43 778169 2162.96 1450 1413 359.1
A 4 249 703969 1956.35 1450 1413 359.1
A 3 130 604341 1678.92 1450 1413 359.1
B 4 81 1230945 4031.6 1429 1375 305.0
B 12 32 913242 2989.9 1429 1375 305.0
B 1 223 729556 2387.61 1429 1375 305.0
C 13 3 2445334 6790.24 1305 1297 359.9
C 15 147 1682890 4671.95 1305 1297 359.9
C 1 44 1462990 4061.0 1305 1297 359.9
D 15 184 4428690 12139.21 1302 1256 364.7
D 7 126 1436442 3935.02 1302 1256 364.7
D 10 181 1101316 3016.16 1302 1256 364.7

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