ASTROSAT CZTI

Data Quality Report

Orbit 53088

Creation date: 2025-07-23T11:39:53.397711
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/AS1C09_011T07_9000006488_53088cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53088cztM0_level2_quad_clean.evt
Size (bytes)916,027,20074,926,080
Size873.6 MB 71.5 MB
Events in quadrant A14,743,262191,490
Events in quadrant B3,750,765669,583
Events in quadrant C6,861,132518,225
Events in quadrant D8,036,997423,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483712
B0158372
C0250372
D0285273

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6673488573.205455%
B6674981.468385%
C6674107116.047348%
D6673191028.622808%

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 7623 6673 4555 4555 59.75% 68.26%
B 7624 6675 63 63 0.83% 0.94%
C 7624 6675 870 870 11.41% 13.03%
D 7623 6674 1450 1450 19.02% 21.73%

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 9 191 12026399 113729.56 413 402 105.7
A 0 8 511547 4833.89 413 402 105.7
A 6 248 226529 2138.48 413 402 105.7
B 0 213 449427 3081.47 683 658 145.6
B 2 249 242356 1659.62 683 658 145.6
B 4 81 87215 594.34 683 658 145.6
C 15 224 2398178 13786.84 626 619 173.9
C 1 241 1270559 7302.62 626 619 173.9
C 13 3 275650 1581.53 626 619 173.9
D 12 17 4702603 28220.64 573 547 166.6
D 8 176 364731 2185.75 573 547 166.6
D 2 249 138642 828.81 573 547 166.6

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