ASTROSAT CZTI

Data Quality Report

Orbit 35125

Creation date: 2022-03-28T11:52:33.990523
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/AS1A11_047T09_9000005028_35125cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35125cztM0_level2_quad_clean.evt
Size (bytes)1,197,063,360110,710,080
Size1.1 GB 105.6 MB
Events in quadrant A10,356,215627,759
Events in quadrant B6,282,041693,120
Events in quadrant C5,892,663691,447
Events in quadrant D12,990,401585,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380574
B0254663
C0236953
D0461733

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10876174116.007723%
B108762802.574476%
C10876510.468922%
D10876159614.674513%

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 14934 10879 1271 1271 8.51% 11.68%
B 14934 10879 179 179 1.20% 1.65%
C 14934 10879 33 33 0.22% 0.30%
D 14934 10879 1286 1286 8.61% 11.82%

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 15 169 5527417 23119.62 1188 1162 239.0
A 10 83 141025 585.13 1188 1162 239.0
A 9 143 74612 307.29 1188 1162 239.0
B 5 172 482426 1977.46 1261 1228 243.3
B 0 190 469478 1924.25 1261 1228 243.3
B 3 112 160372 653.99 1261 1228 243.3
C 15 214 456618 1576.51 1247 1254 288.8
C 0 10 249544 859.6 1247 1254 288.8
C 14 67 115884 396.86 1247 1254 288.8
D 8 195 5727460 19639.09 1190 1156 291.6
D 2 250 965879 3308.64 1190 1156 291.6
D 12 233 446405 1527.04 1190 1156 291.6

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