ASTROSAT CZTI

Data Quality Report

Orbit 20191103_A07_007T03_9000003280_level2

Creation date: 2025-12-04T22:57:17.332524
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/AS1A07_007T03_9000003280cztM0_level2.fits modeM0/AS1A07_007T03_9000003280cztM0_level2_quad_clean.evt
Size (bytes)403,090,560331,125,120
Size384.4 MB 315.8 MB
Events in quadrant A2,557,0381,941,782
Events in quadrant B2,431,7361,941,294
Events in quadrant C2,426,4541,817,823
Events in quadrant D2,133,4741,665,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0890
C0890
D0890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07880
B07880
C07880
D07880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0804290
B0818860
C0804800
D0888510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A387413310.854392%
B387414641.197698%
C387414741.223510%
D387416311.628765%

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 47085 38740 0 0 0.00% 0.00%
B 47085 38740 0 0 0.00% 0.00%
C 47085 38740 0 0 0.00% 0.00%
D 47085 38733 0 0 0.00% 0.00%

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 0 29 2503 11.47 665 627 163.5
A 7 110 2124 9.16 665 627 163.5
A 0 30 1867 7.58 665 627 163.5
B 2 9 1806 9.32 644 618 127.5
B 2 8 1602 7.72 644 618 127.5
B 14 254 1582 7.56 644 618 127.5
C 1 81 1816 7.4 641 602 164.1
C 1 80 1794 7.26 641 602 164.1
C 12 241 1674 6.53 641 602 164.1
D 7 3 1493 5.86 608 556 159.8
D 6 231 1493 5.86 608 556 159.8
D 15 46 1486 5.82 608 556 159.8

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