ASTROSAT CZTI

Data Quality Report

Orbit 40731

Creation date: 2024-06-27T22:19:44.265146
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/AS1A12_066T01_9000005562_40731cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40731cztM0_level2_quad_clean.evt
Size (bytes)455,996,16087,370,560
Size434.9 MB 83.3 MB
Events in quadrant A3,172,067627,547
Events in quadrant B2,716,785633,598
Events in quadrant C6,696,078499,771
Events in quadrant D3,862,611495,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127903
B0118122
C0237102
D0150822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5552601.080692%
B5552500.900576%
C5552120421.685879%
D555282814.913545%

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 7225 5553 32 32 0.44% 0.58%
B 7225 5553 27 27 0.37% 0.49%
C 7225 5553 1128 1128 15.61% 20.31%
D 7225 5553 205 205 2.84% 3.69%

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 526365 4067.85 625 610 129.2
A 12 189 175796 1355.44 625 610 129.2
A 13 248 41119 313.42 625 610 129.2
B 0 229 129173 1069.32 620 602 120.2
B 4 170 50325 413.54 620 602 120.2
B 0 190 48225 396.08 620 602 120.2
C 9 187 4216683 32667.21 558 562 129.1
C 15 214 218899 1691.71 558 562 129.1
C 14 254 31983 243.46 558 562 129.1
D 2 249 604445 4288.11 567 551 140.8
D 10 34 250590 1775.47 567 551 140.8
D 1 52 173537 1228.33 567 551 140.8

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