ASTROSAT CZTI

Data Quality Report

Orbit 22671

Creation date: 2024-06-27T18:44:17.107124
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/AS1A08_007T01_9000003362_22671cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22671cztM0_level2_quad_clean.evt
Size (bytes)570,971,52098,524,800
Size544.5 MB 94.0 MB
Events in quadrant A3,553,171633,145
Events in quadrant B3,831,401636,264
Events in quadrant C3,575,617606,784
Events in quadrant D5,827,842590,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153992
B0160912
C0154342
D0224525

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74261311.764072%
B74271682.262017%
C74271301.750370%
D74266678.981955%

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 8541 7428 0 0 0.00% 0.00%
B 8542 7429 4 4 0.05% 0.05%
C 8542 7429 3 3 0.04% 0.04%
D 8541 7428 479 479 5.61% 6.45%

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 14152 71.81 920 895 184.6
A 0 226 8256 39.87 920 895 184.6
A 3 137 7458 35.55 920 895 184.6
B 0 219 76216 437.82 912 888 172.1
B 0 229 57183 327.2 912 888 172.1
B 0 190 56508 323.27 912 888 172.1
C 14 238 136469 664.54 872 873 204.0
C 0 239 12184 55.43 872 873 204.0
C 10 22 10339 46.39 872 873 204.0
D 12 235 834858 3973.49 862 835 209.9
D 1 52 468498 2228.06 862 835 209.9
D 5 32 299619 1423.48 862 835 209.9

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