ASTROSAT CZTI

Data Quality Report

Orbit 52051

Creation date: 2025-05-14T13:20:06.203424
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_011T06_9000006468_52051cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52051cztM0_level2_quad_clean.evt
Size (bytes)982,647,36080,297,280
Size937.1 MB 76.6 MB
Events in quadrant A4,071,221669,602
Events in quadrant B7,276,880588,423
Events in quadrant C4,932,110648,761
Events in quadrant D19,513,8463,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176700
B0268770
C0201170
D0630892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74811792.392728%
B7482157221.010425%
C74823234.317028%
D7481745399.625718%

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 7481 7481 140 140 1.87% 1.87%
B 7481 7481 1005 1005 13.43% 13.43%
C 7482 7482 285 285 3.81% 3.81%
D 7480 7480 7284 7284 97.38% 97.38%

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 15 174 292436 1555.82 741 722 187.5
A 8 43 102004 540.17 741 722 187.5
A 8 247 99222 525.34 741 722 187.5
B 12 32 2055005 14369.93 668 643 143.0
B 8 3 1146035 8011.83 668 643 143.0
B 5 172 531594 3713.92 668 643 143.0
C 15 224 982024 4873.76 731 724 201.3
C 1 242 431902 2141.5 731 724 201.3
C 15 230 120945 597.09 731 724 201.3
D 15 94 16690661 354895.61 145 137 47.0
D 6 42 1260449 26798.39 145 137 47.0
D 0 18 277968 5907.6 145 137 47.0

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