ASTROSAT CZTI

Data Quality Report

Orbit 20210430_A10_007T01_9000004350_level2

Creation date: 2025-12-25T03:37:02.462016
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/AS1A10_007T01_9000004350cztM0_level2.fits modeM0/AS1A10_007T01_9000004350cztM0_level2_quad_clean.evt
Size (bytes)3,914,516,1602,762,717,760
Size3.6 GB 2.6 GB
Events in quadrant A29,393,77217,199,363
Events in quadrant B18,700,58913,540,363
Events in quadrant C22,142,16213,939,957
Events in quadrant D24,686,01915,381,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05540
B05530
C05540
D05530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070220
B070270
C070280
D070200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07686140
B013043770
C07586900
D08651080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34519985052.463796%
B3432385586516.275879%
C34526091272.643515%
D345227115163.335776%

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 418542 347770 0 0 0.00% 0.00%
B 418542 342911 0 0 0.00% 0.00%
C 418542 347888 0 0 0.00% 0.00%
D 418542 347836 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 19262 7.15 7724 7363 1663.2
A 7 110 18126 6.47 7724 7363 1663.2
A 9 19 17716 6.22 7724 7363 1663.2
B 2 9 15164 10.8 4941 4709 968.2
B 2 8 12649 8.2 4941 4709 968.2
B 3 17 12566 8.12 4941 4709 968.2
C 1 81 14870 6.65 5885 5662 1384.4
C 1 80 14794 6.6 5885 5662 1384.4
C 9 209 14254 6.21 5885 5662 1384.4
D 15 46 15450 5.33 7119 6687 1642.5
D 7 3 15066 5.1 7119 6687 1642.5
D 6 231 15042 5.09 7119 6687 1642.5

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