ASTROSAT CZTI

Data Quality Report

Orbit 01283

Creation date: 2024-06-27T14:10:22.927925
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/AS1G04_003T02_9000000228_01283cztM0_level2.evt modeM0/AS1G04_003T02_9000000228_01283cztM0_level2_quad_clean.evt
Size (bytes)385,905,60025,058,880
Size368.0 MB 23.9 MB
Events in quadrant A2,147,185171,267
Events in quadrant B2,491,184165,197
Events in quadrant C2,445,187162,950
Events in quadrant D4,492,685136,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075412
B085541
C084021
D0145741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164430.182482%
B1644301.824818%
C1644150.912409%
D164467841.240876%

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 2624 1645 71 71 2.71% 4.32%
B 2624 1645 240 240 9.15% 14.59%
C 2624 1644 144 144 5.49% 8.76%
D 2624 1644 1522 1522 58.00% 92.58%

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 12 243 6993 47.43 556 557 135.7
A 10 2 2537 14.59 556 557 135.7
A 13 9 2408 13.64 556 557 135.7
B 8 4 134872 973.9 580 580 137.9
B 6 53 103248 744.56 580 580 137.9
B 15 22 15512 108.29 580 580 137.9
C 8 208 130663 819.98 561 584 158.6
C 15 241 83071 519.98 561 584 158.6
C 10 207 18176 110.9 561 584 158.6
D 13 169 1950055 12837.12 488 504 151.9
D 10 84 302002 1985.26 488 504 151.9
D 13 70 183237 1203.23 488 504 151.9

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