ASTROSAT CZTI

Data Quality Report

Orbit 37957

Creation date: 2024-06-27T21:46:38.851233
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_082T01_9000005356_37957cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37957cztM0_level2_quad_clean.evt
Size (bytes)389,007,36095,538,240
Size371.0 MB 91.1 MB
Events in quadrant A2,814,913635,206
Events in quadrant B3,092,456641,606
Events in quadrant C2,644,375654,157
Events in quadrant D2,896,145618,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113803
B0121882
C0106682
D0117992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4900190.387755%
B49001693.448980%
C4900581.183673%
D4900561.142857%

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 6993 4901 4 4 0.06% 0.08%
B 6993 4901 115 115 1.64% 2.35%
C 6993 4901 43 43 0.61% 0.88%
D 6993 4901 58 58 0.83% 1.18%

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 10 83 359662 3116.83 577 567 115.2
A 15 222 191182 1654.48 577 567 115.2
A 12 189 17729 148.96 577 567 115.2
B 5 172 744330 6998.46 566 553 106.3
B 4 81 38968 361.46 566 553 106.3
B 5 184 32589 301.44 566 553 106.3
C 15 214 225572 1751.63 559 562 128.5
C 0 10 217007 1684.95 559 562 128.5
C 14 254 15764 118.34 559 562 128.5
D 1 52 361534 2643.32 560 546 136.6
D 13 249 133539 973.84 560 546 136.6
D 2 249 105329 767.27 560 546 136.6

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