ASTROSAT CZTI

Data Quality Report

Orbit 35130

Creation date: 2022-03-28T18:29:55.039955
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_35130cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35130cztM0_level2_quad_clean.evt
Size (bytes)560,612,16092,880,000
Size534.6 MB 88.6 MB
Events in quadrant A3,782,141628,358
Events in quadrant B3,581,915637,577
Events in quadrant C3,096,764619,277
Events in quadrant D6,168,349565,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144043
B0140962
C0122972
D0220482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51733316.398608%
B51731563.015658%
C51731132.184419%
D51733647.036536%

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 7116 5174 207 207 2.91% 4.00%
B 7116 5174 89 89 1.25% 1.72%
C 7116 5174 64 64 0.90% 1.24%
D 7116 5174 383 383 5.38% 7.40%

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 1063004 7994.9 670 661 132.9
A 10 83 76778 572.84 670 661 132.9
A 12 16 34962 258.14 670 661 132.9
B 5 172 546363 4270.21 672 657 127.8
B 0 190 128216 998.16 672 657 127.8
B 0 189 104899 815.71 672 657 127.8
C 0 10 277424 1855.25 650 656 149.2
C 15 214 219584 1467.53 650 656 149.2
C 0 207 39319 259.17 650 656 149.2
D 8 195 2451477 15350.48 655 638 159.7
D 7 223 332857 2080.81 655 638 159.7
D 13 249 288752 1804.56 655 638 159.7

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