ASTROSAT CZTI

Data Quality Report

Orbit 01252

Creation date: 2024-06-27T14:09:52.791281
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_011T02_9000000226_01252cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01252cztM0_level2_quad_clean.evt
Size (bytes)1,294,891,20097,303,680
Size1.2 GB 92.8 MB
Events in quadrant A8,638,148655,631
Events in quadrant B12,665,666569,201
Events in quadrant C7,928,413639,447
Events in quadrant D9,534,851607,798

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304992
B0427041
C0284181
D0332061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6798580.853192%
B6798152922.491909%
C679830.044131%
D67984787.031480%

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 7398 6798 395 395 5.34% 5.81%
B 7398 6798 2396 2396 32.39% 35.25%
C 7398 6798 120 120 1.62% 1.77%
D 7397 6797 962 962 13.01% 14.15%

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 8 14 586324 1167.38 2069 2090 500.5
A 8 15 31408 58.58 2069 2090 500.5
A 12 243 31072 57.91 2069 2090 500.5
B 2 32 4438150 9576.23 1948 1955 463.3
B 5 191 332834 714.25 1948 1955 463.3
B 8 4 204856 437.99 1948 1955 463.3
C 15 241 305264 564.7 1924 1988 537.1
C 3 79 49400 88.28 1924 1988 537.1
C 3 111 35431 62.27 1924 1988 537.1
D 10 84 1761374 3133.58 1808 1870 561.5
D 12 22 384436 681.33 1808 1870 561.5
D 2 88 295031 522.1 1808 1870 561.5

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