ASTROSAT CZTI

Data Quality Report

Orbit 20191213_C05_001T01_9000003366_level2

Creation date: 2025-12-06T17:14:04.544662
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/AS1C05_001T01_9000003366cztM0_level2.fits modeM0/AS1C05_001T01_9000003366cztM0_level2_quad_clean.evt
Size (bytes)684,097,920776,010,240
Size652.4 MB 740.1 MB
Events in quadrant A4,281,8344,979,086
Events in quadrant B4,064,0264,944,099
Events in quadrant C4,130,5084,683,364
Events in quadrant D3,602,9224,257,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013780
B013780
C013780
D013780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01406880
B01431450
C01415670
D01734700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A676415830.861903%
B676417601.123579%
C676419711.435520%
D6764122503.326385%

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 78231 67641 0 0 0.00% 0.00%
B 78231 67641 0 0 0.00% 0.00%
C 78231 67641 0 0 0.00% 0.00%
D 78231 67635 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 4094 11.2 1115 1058 271.1
A 7 110 3386 8.59 1115 1058 271.1
A 0 30 3215 7.96 1115 1058 271.1
B 2 9 3258 10.67 1077 1036 208.3
B 2 8 2776 8.36 1077 1036 208.3
B 5 128 2597 7.5 1077 1036 208.3
C 3 234 2996 7.15 1092 1031 274.7
C 3 126 2918 6.87 1092 1031 274.7
C 9 209 2824 6.53 1092 1031 274.7
D 3 14 2558 5.93 1030 940 272.9
D 6 231 2516 5.78 1030 940 272.9
D 10 189 2488 5.67 1030 940 272.9

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