ASTROSAT CZTI

Data Quality Report

Orbit 50640

Creation date: 2025-02-08T08:27:40.774518
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/AS1T05_241T01_9000006446_50640cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50640cztM0_level2_quad_clean.evt
Size (bytes)617,483,52065,940,480
Size588.9 MB 62.9 MB
Events in quadrant A5,843,746421,471
Events in quadrant B10,059,264268,053
Events in quadrant C3,653,691479,060
Events in quadrant D2,886,547454,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209931
B0335561
C0147731
D0128831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5335101819.081537%
B5335303956.963449%
C53352985.585754%
D53351592.980319%

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 6430 5336 886 886 13.78% 16.60%
B 6430 5336 2548 2548 39.63% 47.75%
C 6430 5336 220 220 3.42% 4.12%
D 6430 5336 98 98 1.52% 1.84%

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 4 4 2230153 16660.47 526 511 133.8
A 4 249 738231 5512.44 526 511 133.8
A 8 38 194956 1452.94 526 511 133.8
B 4 170 7570425 79424.19 443 428 95.3
B 5 185 320203 3355.07 443 428 95.3
B 4 206 121608 1271.42 443 428 95.3
C 15 174 709193 4844.42 533 528 146.3
C 13 3 341482 2330.75 533 528 146.3
C 0 176 203716 1388.99 533 528 146.3
D 2 249 169650 1128.84 534 515 149.8
D 7 110 124135 825.07 534 515 149.8
D 15 185 101975 677.17 534 515 149.8

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